I think Israel is the only entity that is doing basically everything possible to kick-start WWIII. As the Ukraine/Russia stuff is mostly being contained to Ukraine, Donetsk, Luhansk, Crimea, and parts of Russia. But Israel is openly starting new fronts in Palestine and Lebanon. Along with attacking Iran, Syria, and Yemen. And they are most certainly the most likely entity to be the next government to use nukes in war. The doctrine of kill everyone to not allow capture is far more scary than what has been going on in Ukraine.

Not to say that the forced conscription and arrests of draft aged (or even physically able) men isn't fucked (it very much is). But even the neo-Nazis in command of Ukrainian forces aren't taking that level of official doctrine of death to their own side. Their doctrine is more "you fight or die" (but not "we will also kill you if you are caught by the enemy) which isn't exactly "shocking" if a nation is on an actual defense from inside their borders. Israel is invading other nations and acting at more of an ISIS level of fucked up while yelling about how they are "just defending ourselves."