OK so the hurdles Trump faces in foreign affairs are as follows:

North Korea: Kim Jong Un has met with Xi Jinping and is ready to talk with Trump PEACEFULLY.
Syria: Each time the United States attempts to pull out of Syria and have nothing to do with their Civil War between Asad/Russia/China & Al Qaeda/ISIS there's a chemical attack (real or fake) and those attacks could be done by some malevolent forces in Israel actually (I wouldn't be surprised by it). Trump will get us out of Syria peacefully.
Iran: Things have been quiet with Iran recently, but I am sure it'll heat up once people start to realize that China is going to accept the trade deals and/or come to the table and make more fair deals for the US. Things will heat up, but only in the media we're not going to fight with Iran and they aren't going to fight with us.
China: Trade is the big issue here and Trump is going to play a strong hand because he knows China will respect that. They don't want to fight us over trade, they'll bend and new more fair deals will be made.
Russia: As much as some people apparently want us to hit Russia militarily it's not going to happen. Not because Putin is friends with Trump or anything it's just that's an insane proposition, that's end of the world type shit everyone knows it which is why it'll be all posturing and no fighting.
Mexico: They've got a border wall to their south but they complain about if the US puts up a wall, fuck that shit. They've leeched off of us for too long, they are corrupt, the cartels run everything and it's time we put an end to it. They aren't going to go to war with us either, they'll keep pushing illegals to cross the border but that will be dealt with.

I believe Trump has done amazingly well in foreign relations. He got Mattis to basically wipe out ISIS in a month's time (makes you wonder why that didn't happen earlier....it's almost like someone was propping them up).

Brits probably are no fans of Trump, but it's funny because yall don't like Theresa May either and neither does Trump.