Did we do good with “experienced” foreign policy experts in starting the Iraq war? The answer is emphatically NO! May be a fresh thinker with actual military experience would be better.
You’re not getting around the only reason he’s even being considered as such is his skin color. Millions of Americans with better qualifications.
And the UN ambassador doesn’t really have much of anything to do with deciding to go to war. Certainly didn’t re: Iraq.