European Union foreign policy chief Josep Borrell received a letter from Iran's foreign minister triggering the Joint Comprehensive Plan of Action (JCPOA) "dispute resolution mechanism." Iran cited frustration with the failure of France, Germany, and the United Kingdom to meet their obligations under the JCPOA. The mechanism allows for about one month to resolve any dispute, with the ability to extend the period. In January, France, Germany, and the United Kingdom triggered the dispute resolution mechanism over Iran's refusal to maintain restrictions on uranium enrichment.