what is the danger of Lenin's idea of party leadership?

Lenins idea of party leadership was dangerous because in such a corrupt system, a party was terrible for the local environment. Many people would fight for the top leadership position.

thanks. why did the Germans allow Lenin and his associates to return to Russia?

in such a corrupt system

Why are we here

What obstacles did Lenin have to overcome to achieve his revolution?

The Germans allowed Lenin and his associates to return to Russia during World War I because they believed that they would weaken the Russian war effort and create chaos within the country. By supporting Lenin and his Bolshevik Party, the Germans hoped to undermine the stability of Russia and divert its resources from the war. The German government saw Lenin and his followers as a tool to destabilize their enemy's front, believing that the chaos caused by a revolution in Russia would hinder the Russian military's ability to fight effectively in the war.

The Germans allowed Lenin and his associates to return to Russia during World War I because they hoped that Lenin's revolutionary ideas would create chaos and weaken Russia, which was their enemy at the time. The Germans believed that by supporting Lenin, they could disrupt the Russian war effort and potentially bring about a separate peace treaty that would allow them to concentrate on fighting the Allies in the west. Therefore, they facilitated Lenin's return to Russia by providing him with safe passage in a sealed train through German-occupied territory. This decision ultimately had far-reaching consequences, as Lenin's return ignited the Russian Revolution and led to the establishment of the Soviet Union.