North Korea started lobbing missiles again, Putin built up his invasion force for Ukraine, his dismissal of Palestinian concerns and emboldening of Israel led to Hamas attacking Israel again, Afghanistan was overrun by the Taliban because he decided to pull US troops out.
The world wasn't very peaceful under Trump. Rather it geared up for war.
If you're only going to consider starting wars, you'll have to add a few more presidents to that list, namely: Eisenhower, Kennedy, Nixon, Ford, Carter, Reagan, Clinton, Obama and Biden.