War between America and Russia? Russia has trouble finding money for the upkeep of a submarine, I doubt their nuclear warheads are in good shape, or can be launched. I don't think this actor did their homework very well.
A war in the middle east on the other hand is very likely, and it could have a destablising effect on western nations, especially after various blocks will take sides.
However war with EU will not take place before the EU has a united military structure, and this is very very far away and can only happen after the EU has a central government which would mean that the European nations states give up sovereignty.
The Chinese goervning structure is in the process of collapsing, communism is dying out and liberalisation and increased capitalism will lead to a different kind of government, one which caters to the industrial compley like most western nations. As a result of this the army will be downsized considerably.
But an interesting waste of time