Islam would focus on Israel/America first and North Korea would focus on America.
In this particular situation with Russia we are the most likely target as thanks to Johnson, Sunak and Starmer we have been the most bellicose. I would consider us lucky if we get out of this without anything.
Recent testing of our nuclear defence was extremely concerning.
A lot is going to depend upon what Trump brings to the table and how Russia views it.....They won't want to destroy realistic off ramps, which is precisely why Biden has chosen now to escalate.
A hope is that, just as with Trump, that the Pentagon aren't being honest with Biden and are secretly warning the Russians on where and reassuring them that certain targets won't be in play as we have entered an extremely dangerous time.
The people who have been calling for this and think playing chicken with nuclear death deserve criticism. Maybe they have no genetic future they care about. If it goes wrong it's the end for all of us. The problem with these people is there is no going back once that line is crossed and deliberately playing with the future of humanity is stupidity.
Technology develops, Russia and America have sophisticated missile defence systems and I know Moscow has lots of nuclear underground bunkers for its population developed during the cold war.
We have nothing....it was considered in the 70s by Labour but rejected due to the cost.