> Which war did Bill Clinton start again?

Generally, the US/NATO-led interventions in the Balkans, most notably the US-led NATO-Serbia war, after explicit Congressional disapproval.

Though I suppose those could be excluded since they were interventions in existing conflicts.

Kosovo war was US led (not opposing it, but definitely under Clinton)

Here he boasts that he did want to start many but the Republicans kept blocking him: https://www.youtube.com/watch?v=UbUAzGzTh_g

He tossed a few rockets around https://jacobinmag.com/2016/10/bill-clinton-al-shifa-sudan-b...

So did Trump, so if you are just looking at that and not, say, the Balkans, I'm not sure why Trump gets any extra credit here.

Of course, there's probably some dispute over whether intervening to prevent genocide, either in general or in the specific manner it actually occurred under Clinton in the Balkans, is really a negative.

He definitely didn't start it, but there were US missiles landing on at least 3 continents. I was a child at the time, but it was such big news that I still remember two of those occasions.

He didn't, and neither did Obama if we're going to give Trump credit for this.

The 2011 military intervention in Libya happened under Obama. It was led by France and UK, with US support, and wouldn't have happened if Obama had not green-lighted the operation. 10 years later the country is still in the middle of a civil war, de facto cut in two opposing camps that each control roughly half of the country.

Of course, compared to Iraq invasion it was a small scale operation, but is still generally considered Obama responsibility (although of course primarily Sarkozy and Cameron responsibility).

Or Obama, for that matter?

How good is your context of Libya and how it effected Syria?