I've never understood where Trump got the reputation or idea that he was a good negotiator. Trump's idea of negotiation seems to be to promise the sky and the moon when he needs your co-operation then stiff you once the deal is done. If he doesn't need your co-operation then he tries to strong-arm you. What's worse, Trump thinks of negotiations as zero-sum contests where only he can win. The best negotiations are where everyone leaves happy but Trump only participates in negotiations where he leaves happy. 


After getting rid of Obama's negotiations nobody will negotiate with Trump in good faith, because they know any agreement with the USA will only good until the next president comes in. Don't expect any big trade deals while Trump is in power, and even if he does succeed in one don't expect it to go well for the USA.