ps: Make up for yesterday's, sorry.

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In this announcement, the United States demanded that Germany immediately "stop unrestricted submarine warfare", which is obviously deliberately targeted.

Because Erdezi's unrestricted submarine warfare didn't just start today, they started it a year after the war began. However, this is also something that can't be helped, war will always lower the moral level, even if everyone can still abide by the rules and talk about demeanor at the beginning, but when it comes to red eyes, who will talk about bullshit demeanor?

In the First World War, according to the relevant provisions of international law, submarines need to accurately identify the intended target before performing their mission, which requires the submarine to surface and send a crew to board the target ship for inspection, so as to confirm whether the other party is a legitimate target. Only after it is fully confirmed that the target belongs to the attackable object, the submarine can sink it. Before sinking the target, it is necessary to ensure that the entire crew of the opposing party is given a chance to escape and, if necessary, some assistance.

At the beginning of the war, German submarines were still very well-behaved, and they carried out their work in full accordance with the relevant provisions of international law. However, when German submarines fulfilled the above rules, their own tactical advantages such as concealment and suddenness were almost completely lost, so German submarines had a mediocre record in the early stage of World War I.

Later, the German radical officers could not stand it, and they believed that under the constraints of such rational and humane rules, German submarines "will not commit any offence" against the ships of the Entente nationals. As a result, the German Admiralty soon issued a new law, requiring German submarines to adopt more offensive tactics against all merchant ships (whether Allied or neutral) without fear of the constraints of the Capture Act, and to sink all of them once discovered. According to this new law, in order to prevent the escape of the target, German submarines could launch attacks in a submersible state, which greatly increased the lethal effect.

However, there are also high-ranking members of the German government, including Chancellor Batemann Holvay and Admiral von Bohr, chief of naval staff, who fear that such an approach will anger neutral countries, especially the United States and China. However, Germany is also prepared for it, and they are after negotiations between China and the United States. The Chinese government says that Chinese merchant ships will not sail directly to the United Kingdom, and even if they do reach the North Atlantic, they will only sail to neutral countries such as Sweden, Denmark, the Netherlands, Iceland and other countries. The United States also replied to the same effect.

But only China did it, and after September 1915 it did not send a single shipload directly to the British mainland. This is normal, because there is the Eurasian Railway, and many of the trade materials that China gives to the Allies are by rail, and there is no need to go by sea. The supplies to the Entente were also traded through neutral countries, or sent to colonies such as Egypt and North Africa, without having to be sent to their homeland.

Although the United States agreed, it did not fully comply, mainly because some of their shipowners, lured by heavy profits, ignored the government's warnings. Many of these disobedient guys were sunk by German submarines, and the U.S. government did not say anything about what happened to these unfortunate people. Because the High Seas Fleet was still there at that time, the attitude of the United States was still more supportive of the Allies.

Once Erdezi was shameless, the results of the battle rose slowly, and since the beginning of the unrestricted submarine war, the record of German submarines began to soar. By February 1917, more than 350 German submarines had sunk about 6,000 Allied and neutral ships, including 197 combat ships and more than 5,800 transport ships, with a total tonnage of about 18 million tons. In order to deal with the German submarines, the Entente used more than 900 destroyers and large frigates, which greatly contained the maritime power of the Allied powers.

However, it should be pointed out that the 18 million tons of the Ertokuko submarine were basically obtained before the Battle of Jutland. After the Battle of Jutland, the British Home Fleet was wiped out, the German Ocean Fleet came out with a big swagger, and even the German merchant ships that had been at home since the beginning of the war began to come out and return to their old jobs.

At this time, Germany also changed its approach, and the main force for breaking diplomatic relations became surface ships, not submarines. Because submarines can only sink merchant ships, but cannot capture the other side, this did not matter in the past, because even if they captured the other side's merchant ships, they would have to face interception by the home fleet and could not be sent back to Germany. But after the British home fleet was completely destroyed, the problem would no longer exist, and the captured merchant ships could be sent back with confidence and boldness.

Therefore, after taking control of the sea power, it is very wasteful to continue to sink the merchant ships of the Entente. Therefore, after September last year, the activity of German submarines has decreased a lot, and they rarely sink merchant ships, and their most important task is to act as eyes and ears, and after discovering the merchant ships of the Allied countries, they will notify their surface ships to come and intercept them, or rob them.

In other words, although the United States cannot be miscalculated in demanding that Germany "stop unrestricted submarine warfare," the timing of the choice is very embarrassing. At the height of the German submarines, the United States also sank a number of merchant ships that did not heed the warnings, but they did not protest so forcefully at that time. On the contrary, it is more amusing that Germany has now essentially stopped "unrestricted submarine warfare" and behaves so toughly.

Well, as you all know, it's nothing more than an excuse.

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March 31, 2758 (1917). Hankyung, presidential palace.

The United States issued this kind of statement to indicate that they are going to end, and this is understood by everyone. But the Allies were in full swing at this time, and the revolution had already broken out in Russia, and they were too busy to take care of themselves. The comparison of strength between the two sides is not optimistic, so the United States is also a little lacking in confidence, and the first thing they think of is to pull China, a small partner, into the water together.

So, the day after the protest in the United States, the US ambassador to China, Reinsch, came to visit Wendehei. Of course, to convince China, it would be too far-fetched to just talk about "unrestricted submarine warfare". So they also prepared something, which was a German diplomatic secret message. The secret message came from German Foreign Minister Arthur Zimmermann and was transmitted to his Ambassador to Washington, Johann von Berendorff, and then to the German Ambassador to Mexico, Hennig von Eckhart, where it would be declassified and then handed over to Mexican President Valistiano Gahanza.

"Mr. Ambassador, this kind of thing is so ridiculous that I can't convince my people at all. In a very exaggerated tone, he said, "Do you want me to sue them that the Mexicans are going to attack our American friends? God, I can't believe how they will react." ”

The U.S. ambassador to China, Reinsch, also knew how ridiculous this kind of thing was, so he had to say embarrassedly: "Your Excellency, but this telegram is indeed from Germany......"

"So, Mr. Ambassador, can you trust Mexico to attack your country?" asked Wen Deji with a mocking expression.

"Well, this ......" Reinsch is embarrassed to say that he believes such a thing, even though he has the face of a professional diplomat. He also knew that Wen Deji was a good person, and it was impossible for him to be satisfied with this kind of deception, and talking nonsense in front of smart people would only bring shame on himself. So, he had to laugh a few times and said: "Hehe, although logically speaking, this possibility is extremely unlikely, but it also reflects Germany's hostility towards us......"

This is true, although I do not know what Wilhelm II and other German high-ranking people thought, but it is not a gesture of friendship for Zimmermann to send such a telegram as German Foreign Minister. "There is nothing to say about the stupidity of the Germans.

Because the origin and content of this telegram are so absurd that people can't vomit, Wendesi doesn't know what to say about the Germans.

The telegram revealed Tsimman's great diplomatic vision. He offered Mexico a proposal asking for help in his attack on the United States. As a benefit, Zimmerman generously rewarded Mexico with many U.S. states as if they were locked in his safe.

The naivety of this telegram is incredible. The Mexicans, no matter how stupid they were, knew that in the circumstances, the Germans would not be able to help them in the event of a war with the United States. Why, then, did Zhimamman reward him with these states? Zhimaman's grand strategy was child's play. But the drama here has huge consequences.

Before the letter reached Washington, it was intercepted by the British. But the British couldn't decipher the code, so they couldn't guess the content. At this time, the German ambassador to Washington immediately appeared to help them. He should have forwarded the letter as it was. But as if he were sleepwalking, he translated the translation, re-encrypted it with an old cipher, and sent it out. Mr. Ambassador didn't realize that he had made the stupidest and saddest mistake a password user could make. As a result, the Americans were outraged when they found that many of their states were to be generously given to the Mexicans by the Germans.

Well, given the absurdity and whimsy of this cable, the vast majority of the American people would have taken it as a joke without the help of the U.S. government and corporations. As long as people with a normal IQ would not believe that Mexico would have such courage, to attack the United States at this time, do they still want to lose half of the country?

But the fact is that the United States has long been preparing to enter the war, but because of its strong isolationism at home, it has no excuse to declare war on Germany. And this stupid telegram from the Germans sent a good excuse to the Americans.

However, this kind of thing is only effective for Americans, not for China.

"Mr. Ambassador, although the Germans are very unfriendly, this is only an assumption of theirs, and it has not caused substantial harm to the United States, so the Sino-US Mutual Assistance Treaty cannot be applied. Although we regret this very much, there is really no reason for China to declare war on Germany. Wen Deji politely pointed out the key points.

Although Erdezi did a very fucked thing, he did not take substantive action, and the scope of application of the "Sino-US Mutual Assistance Treaty" is that only after one party's mainland or territorial waters are invaded by a third country before the other side has the obligation to provide support, and this support is not mandatory.

The United States is also very aware of this, so it is only to test the water by letting Rui Enshi come. Of course, it's best to be able to fool you, and it doesn't matter if you can't. So Ruinsch made another demand, hoping that China would stop trade with the allies.

Of course, such an unreasonable request was directly ignored by Mr. Wen. He kindly pointed out that just yesterday a German trading fleet had left the United States laden with supplies. Since the United States itself has not cut off trade with Germany, what reason is there for China to do so? Yes, after the Battle of Jutland, German merchant ships began to run all over the world again, and although the scale was much smaller than before the war, it also brought Germany a lot of much-needed supplies, and the largest supplier was the United States itself.

Finally, Wen Deji said: "Of course, considering the deep friendship between China and the United States, if the United States declares war on Germany, we will reduce or even stop the arms trade with Germany......

He said with deep affection for the people of the Central Powers: "But trade in civilian goods should not be restricted, at least until China declares war on Germany." After all, it was only a handful of imperialists such as Wilhelm II who started the war, and the vast majority of the Allied people were still innocent. ”

The corners of Rui Enshi's mouth twitched a few times, and he also echoed and sang a few high-pitched words. He also knows that this is already the limit of what China can do, and Wen Desi will never do anything that is not beneficial. However, he also heard from Wen Desi's tone that China may still enter the war, but the timing is uncertain, and if Britain and France refuse to bleed, China will continue to be neutral.

Ruinz has been in China for many years, and he knows it very well. In the current situation, China can wait, anyway, China does not have much investment and loans in the Entente countries, even if there were some insignificant ones in the past, they have even earned back the principal and interest in recent years, and even if the Entente countries hit the streets, the impact will not be great. If you have no desire, you can naturally laugh at the world, and the tide rises and falls.

But the United States can't afford to wait, first of all, economic interests, Britain and France still owe it huge war loans, if the Entente falls, it will be lost. The second is political interests, and now the United States has the intention to replace Britain, but their current strength is obviously still far behind, and if the Allies win now, it will be in vain. The second is the geopolitical issue, and if Germany integrates Europe, the pressure on the United States will be even greater. When the time comes, Mexico's attack on the United States will not be a joke, but may well be a fact. China has a clear geographical advantage in this regard, and even if Germany integrates Europe, it will be difficult to pose a threat to China.

Although the U.S. government regretted China's attitude after Reinsch sent it back, they also knew that they could not delay it any longer. So, on the morning of April 2, the United States declared war on Germany and at the same time announced its accession to the Entente.

Britain, France, and Japan were overjoyed and praised the United States for "fighting for justice and fighting evil." The Allies were obviously stunned by the blow, but for them with high spirits, the entry of the United States was only a trouble. You know, the current situation of the Allies is very different from the same period in the original time and space, they are fighting violently according to the Entente, and the capitals of Britain and France have been lost.

And China, which is very concerned by both sides, said nothing after making some nonsense asking for restraint and so on.

As a result, the Allies reacted quickly and declared war on the United States one after another, and Germany also announced in a high-profile manner that it would intensify "unrestricted submarine warfare", especially against the United States.