These are things you've already heard. It's also most likely come across your radar that Duterte expressed a desire to up his death toll by killing three million drug users. He compared himself to Hitler (like it was a good thing) in that same speech, which makes sense purely from a "next logical crazy thing to say" standpoint. He later apologized to "the Jewish" for making that comparison, but doubled down on his goal of putting half a Holocaust's worth of drug users to death.
All of this has very little to do with what the title of this column implies, which is that a war might break out soon. Don't get me wrong -- in a perfect world, this is precisely the kind of thing we'd deploy the military forces of the world to stop before it even starts. But things just very rarely work that way. We didn't even get involved in World War II until FDR did Pearl Harbor. That's not something I actually believe; it just makes for a perfectly reasonable segue into talking about what's really going to make Duterte the next world leader to commit suicide by U.S. military invasion.
When that inevitably happens, Duterte won't have his stance on drug users to blame. Rather, the culprit will be his updated feelings about the EDCA, or Enhanced Defense and Cooperation Agreement, if details are your thing.
Pictured: a political cartoon from back when the Philippines still liked us.