North Korea – since China is not going to become involved in a conflict (they’d attempt to achieve all thier benefits from serving to Russia get well after its over) North Korea will not be both. Though even when they did AND they defeated South Korea, now what? They don’t seem to be able to leaving the peninsula.
Nicaragua – who’re they combating? Not just like the US has alot of presence or help from S American nations.
Syria – possibly however had sufficient bother combating its personal individuals for years. Turkey could be tremendous glad to be allowed to lastly battle them and at worst that is simply an endless stalemate.
Russia & Belarus towards US, most of Europe, and undoubtedly the Baltics and Ukraine. Not a lot of a contest.
Claiming it will be WW3 is simply the identical as Putin threatening to make use of nuclear weapons, it might be his solely option- and that may simply line up extra nations towards Russia.