From my recollection it was Barack Obama who continued the conflict in Afghanistan and was responsible for scores of extra-judicial assassinations throughout the world.
And while many people died in the Afghanistan conflict and it was a terrible tragedy, the silver lining was that many women gained new liberties. Education wasn't just for men, for awhile. Of course Joe Biden put a stop to that, didn't he?
Colin Powell did plenty of bad things, but the same folks crucifying him probably have a copy of "Dreams from my Father" in their library and have absolved the equally complicit left-leaning politicians of any crimes.
Every single national politician is a self-interested, amoral, shit-bag. Lionizing one side while pillorying the other is not helpful. All politicians should have less power, less influence and less money, across the board. Only then will things get better.