They are our allies and it is in their best interest that the process be as quick and efficient as possible.
It's better to actually play a role in fixing a problem than to sit back and bitch that it affects you while doing nothing to solve it.
Encouraging our allies to actually step up and participate has been a pretty firm part of Trump's policy since his first term. It doesn't mean we couldn't have gone it alone, but when it affects all of our allies as well them getting involved simply makes things run smoother, that's what alliances are for.