Implying that the US could be too focused on Russia right now to help Taiwan defend against a Chinese invasion sounds like wishful thinking considering how little they are doing to help Ukraine.

But in general, communicate, never expect him to read your mind. Dropping hints and mind games generally end badly, guys are pretty much oblivious to that stuff.

As a guy I really can't stress this point enough. Clear communication is key for any relationship and making someone guess what you're thinking is a recipe for disappointment. Just speak honestly about your feelings, don't make your partner's life harder for no reason.