In Europe, the recently freed (since the contested referendum of sunday, 11th May) separatist regions of Ukraine wanted to join the Russian Federation. After the Crimea (and, a little longer before, the Abkhazia and South Ossetia), this is another growth of the Russian Federation. In the view of the the Russia's President to rebuild a Great Russia, the other countries next to the Federation feared that he will find a way (military, economic or pseudo-democratic) to steal them part of their territories.
In Asia, some countries feared, in the same way, the expansionist view of one of their neightbor : the People's Republic of China. Indeed, the China is involved in different disputes about maritime regions which are claimed both by China and their neitbors (Philippines, Vietnam and Japan). The bullying here are the same than in Europe with the deployment of military, economic or democratic forces.