I don't think sitting at a table together (which, most likely, both were assigned to sit at) qualifies as an endorsement. Especially after she called him a war criminal.

I'd vote for someone who sits (probably in assigned seating, as most high-end events are) with Putin over someone that shakes hands with Netanyahu any day. Both are evil no doubt, but only one committed an internationally-recognized genocide, and that's who you're advocating for.