All countries have expected that if the other side goes to war, they will go all out, but the diplomatic toughness of all countries makes the other side unexpected, and the war will come in such a hurry. No matter from the formation of triple alliance, the three-nation agreement, moroccan crises twice and even Austria-Hungary, when Serbia received an ultimatum, they all agreed, but they escalated their actions. At the same time, Germany perceived Russia's military mobilization, and the Kaiser asked Russia to withdraw its troops quickly and prepare for war. In view of the tough diplomacy of various countries and the arrogance of national military power, war is inevitable.
According to the "Schrieffen Plan", Germany first used its developed railway network to concentrate its superior forces to defeat France within six weeks, and then transferred its troops to the eastern front to attack Russia, which shows that it attaches importance to Russia. However, because the Germans were too hot to annihilate the effective forces, they violated the plan that "the right wing must March along the coast", which led to the exposure of the right wing, which was successfully counterattacked by the Paris army, and its quick-fix plan went bankrupt, eventually falling into positional warfare and two-wing operations.
2. During the Cold War, China also supported Pakistan to contain Indian expansion in the South Asian subcontinent, so it didn't mean that it was "surrounded". Anyway, what the Soviets and China people did in South Asia was a drop in the bucket. It was only after the Treasure Island incident that the China administration began to speed up its contacts with the US government, and Nixon finally visited China in 1972.
3. Other socialist countries and the Soviet Union are still closely related. Mongolia is a protected country. Naturally, we said nothing. Vietnam can refer to the above. North Korea's words are probably at this time. The graves of our volunteer soldiers were destroyed. I think you can guess the relationship.