People also just get bored of the topic. There's always a new war, someplace.
Palestine is a classic example of outsiders goading an ethnic minority into a hopeless war and then abandoning them and "supporting" them by sending heart emojis on Twitter and concern-trolling at left-wing campus demos.
Palestine was a political fad and it's already going out of style. It was a dumb idea. Someone should have explained to them, what a dumb idea it is, but nobody actually cared about them. They're just a political mascot that people wave around to look cool. The national flag equivalent of a Che Guevara t-shirt.
And soon the news will move on and they will be left with the rubble, where their cities used to be, and their shitty government and begging for food and medicine and clean water from the very people they started a war against.
Same as the Germans did. Same damn idiocy. Same damn motivation. Same damn starvation. Same damn rubble.
People never learn: aggressive wars do not solve your problems. They just give you bigger problems.
We Germans do know all about these fun little war parties. No, we do not recommend you try them at home.