"In any case, the withdrawal of the United States has actually led to the failure of the nuclear deal. This is while European countries are currently trying to maintain the nuclear deal so that it would contribute their interests. In general, the JCPOA has different strengths and weaknesses. The Achilles heel of this agreement is about paragraphs 11-13 of UN Security Council Resolution 2231, which states that if the United States withdraws from the nuclear agreement unilaterally, this agreement will no longer be valid in the previous manner. "

http://www.tehrantimes.com/news/424089/Is-Europe-really-struggling-to-maintain-JCPOA