The leaders of France, the United Kingdom, Germany and Italy have welcomed the announcement of a memorandum of understanding between the US and Iran, hailing it as a major diplomatic breakthrough and expressing readiness to lift relevant sanctions if Iran takes clear, verifiable steps to address concerns over its nuclear programme. 

In a joint statement, the four European leaders congratulated the US, the Iranian government and all parties involved in facilitating the agreement. They also acknowledged the role played by mediators in advancing the diplomatic process.