This article says that Trump is only very loosely making any comments regarding security. The only one being - if there are American workers on your soil, you'll have protection
In my perspective, it looks very similar to past "deals" the United States has made. Look at how they treated translators and other people who helped in the Middle East.
To me it seems like they'll stop any war from occurring until they get what they want, and then they'll pull out of Ukraine when they feel like it, leaving them high and dry again in the future.
I hope I'm wrong though. I guess we'll see soon enough