WW3 will be the Islamists and Leftists against the Jews/Christians/Other Religious. Europe sealed their fate as Islamic States of Europa when they all bought the Liberalism and Marxist thought about child bearing and government control. It will take another 40-80 years, but their entire continent is truly effed. Now, Russia is the one European country that can stop them, similar to what they did against the Nazis. And if China decides to fight the Muslim takeover, it won't go beyond Western Europe. And I think that is what will stop them over time.
But the US will feel the pain of their power thru more terrorism. 9-11 continues to be the starter plan for the Muslims. They aren't backing down unless they fear the leader of the US, like they did with Trump. But they attacked when they did because they wanted to send Bush a message, thinking he would be weak. Well, he wasn't on that front. And he wouldn't let the fight go away, even if it was fought poorly. And Obama kept up that fight, as he knew that his sympathies for their views could not be sold to the Military Industrial Complex here and he wanted power to continue changing American from within. Trump used American strength to make it clear to Iran and others that they would be wiped off the map if anything happened to us, but Biden gave them their precious Afghanistan back and gave Iran their nuke program again. Eventually, those will both come back to haunt us when we have a leader in place that they want to challenge and they do not fear. That would be any Dem President that won't bend the knee, if there is one, or a very green RINO type GOP President, like Bush was viewed. A Trump Presidency protects our homeland by virtue of what he would do to Iran and Syria and Afghanistan. A Newsom or Harris Presidency probably strengthens them even more but also allows them to buy time to get their nukes ready to use when they see the right time to do so. But it will only be when they see weakness in the White House and when they can be emboldened.