No Hitler, Stalin, or Tito

In January, 1913, Stalin, Hitler, and Tito were simultaneously residing in Vienna. In this alternate history we see them all killed after a coffee shop they were all in collapses. This has huge implications for Russia, Yugoslavia, and Germany.

Germany
In Germany, the Nazi party doesn't get off the ground and the communist and anarchist movements replace it.

Yugoslavia
The Kingdom of Serbs, Croats, and Slovenes experiences ethnic tensions before collapsing in 1920.

Russia
Russia splinters into several states and becomes sort of like the Qing Dynasty in the 19th century. Various portions of its land are partitioned to European powers while an unstable Mainland Russia is taken advantage of by unequal treaties.