One way or the other the USA will slow down Iran's flow of natural resources to China. The country that goes to war against another, is not always fighting it's real enemy. It is a war of resouces/economics. George Bush doesn't like the euro! Tough luck, Iran is not being subordinate to the US interests, and the little watch dog (Israel) is barking up the wrong tree! China is not going to be manipulated by an aggressive little theocracy.
Chairman of U.S. Joint Chiefs of Staff says Iran deal lowers near-term atomic arms risk (Reuters)
from the article: China rejects Israel's call for tougher sanctions against Iran