Working with and trusting is NOT the same thing.  Everyone in that region is tired of baby boy acting out and making threats of nuclear attack.
Funny thing is Iran has the missiles but not the bomb to put on top.  N.K. has the bomb, but not yet the ability to deploy it.
However, in a short time each will have both. 
What is your solution? Should we just sit back and do nothing?  We have already had 8 years of that. Why didn't President Obama try to work with the Chinese? And, why did Obama and Kerry allow Iran to continue on its path to Middle East and Israel's destruction?