I nominate the US to take one for the team.

Both countries have anti nuclear strategies. I'm more concerned about the other innocent countries that will be affected

what about all the trees and little cute animals that will get vaporized? :c

Anti new strategy or not its kinda hard to stop a few hundred missiles, quite a lot will hit and even though they cause devastation its the radiation that will be a serious problem as it affects a larger area than the initial blast and its impossible to remove and it takes hundreds of years to eventually fade away. Also radiation will travel a lot any countries near it will be affected and dragged in. Doesn't help russia have borders with like half of europe.

There won't be a world war 3 as everyone pretty much knows it will be the end of the world.