If everything goes according to plan, this trip will mark Putin's eighth visit to the U.S. during his presidency, a role he has held for 20 years across two separate terms. Trump is hosting the meeting to try to push Moscow into a peace deal with Ukraine.

For Ukraine, the risk is that Trump will push for something he’s been referring to as a “land swap.” He doesn’t say that Russia would simply get the land that it has already taken militarily, which would be problematic enough, because it would reward Moscow and Putin for invading a sovereign state.

Whether the U.S.-Russia summit can lead to a deal to produce peace in Ukraine more than 3 1/2 years after Moscow’s invasion remains to be seen.