I think Nations should take lessons from Donald J Trump on

How not to get into a full scale war and yet take the main culprit out. Vladimir could have done so long back with Ukraine but then how could it have been called a war? How would a million people die then?
Maybe there still are people who don't like Trump's move but I love it.

And from my childhood days, I always thought why Nations get into war with each other when they could minimalize it by Just taking out the president or the main king. Today, My childhood question got answered. Thanks to DJT.