Well, they’re NATO troops and Poland is a party to NATO.
How Obama allowed this to happen is beyond me.
They were allies of England and France, but while they did go to war with Germany over Poland, they, along with the US, let Poland itself twist in the wind as Poland was crushed. I’d be impressed by the courageous stand, if Obama had done it a year ago, not right before he packs his bags and sticks it to his successor to deal with the fallout.