No need to put troops on the ground to start with
An airshield could be provided on most of Ukraine, without being inside Ukraine. It would be a significant help to Ukraine.
Luckily, UK left the EU!
Oh wait! 😆
https://commonslibrary.parliament.uk/research-briefings/sn02784/
PS. Note the stellar GDP performance under Biden, compared to other G7 countries.
However, the trend doesn't show an improvement. quite the opposite. There's still a positive gap on average, but it's decreasing.
https://www.realclearpolling.com/polls/approval/donald-trump/approval-rating