Iran and China are hesitant on him. Iran because he might be stupid enough to actually start a pointless war that's in no one's strategic interests, not even the US; China because he can be bribed, but he also swaps to the opinion of the person who last spoke to him, which makes him unpredictable (and thus makes it difficult to establish any policy that deals with the US as long as he's in power).
Wasn't that why he loves fast food? It's easier to target the White House supply chain for a precision poisoning than to try to hit every McDonald's in a 50km radius and hope to get lucky.