http://www.cbc.ca/news/world/jerusalem-american-embassy-trump-1.4434783
Mr Trump is delivering on that stupid promise. It'll not only please his religious right moron base, but could quite easily provoke an attack in the US. Nothing would suit him better than something spectacular. Lots of Americans who can't stand would rally behind him just like they did for George Bush after the World Trade Centre Attack. Getting a second assured in the first year of his presidency would be quite a coup.
More to the point, would give him the excuse to invoke Martial Law, and turn the U.S.A. into a dictatorship. IF I gave him credit for any brains at all, that is what I would suspect him of. Though he may be taking instructions from Putin.