I believe there are other reasons as well. There's personal enrichment, no doubt. The emoluments clause should prevent that in the USA; it does require enforcement. Oh, and also vengeance. And of course, the thrill of murder which a psychopath enjoys coupled with the "by proxy" element cowards use.

Trump used the military to invade Venezuela (at taxpayers cost), then sells the oil and pockets the money in an offshore account in Qatar, not the US Treasury? WTF? www.youtube.com/shorts/lYW56...