I think the easiest issue on which Trump can be swayed by his advisors and people in the military is that the NATO alliance is **serious business **and you don’t welch on that just because you don’t feel like defending Estonia - that if a NATO partner is attacked, you uphold Article Five and send in the military, period.
I doubt he will budge much on the Syrian refugee issue - that’s one of the easiest things for him to stick to his guns on, given that there are almost no consequences to him for upholding his vow to reduce their immigration - but what other things can Trump be persuaded to change his mind about?
Virtually all of them. Based on his all over the map views in recent years.
I do remember a few months back how conservative Hispanics got Trump to tell them how he was going to moderate a lot of his immigration ideas, only for them to see Trump in the following days to do his infamous Nuremberg like speech. AFAIK Trump was going to be more conciliatory but the Breitbart guys and others noticed what was going to happen and set Trump “right”.
It will all depend with one of the big lessons I always tell others about dealing with the modern world:
We will have to demand that Trump gets better sources of information and that he gets better personnel than the nightmare ones that he has been using so far.
It’s possible Trump is fully aware of the consequences of his NATO views and embraced than as part of a deal with Russia in exchange for Russian support during his campaign.