US Secretary of State Marco Rubio discussed the US-Iran deal with UAE President Mohamed bin Zayed on Wednesday, renewing Washington’s commitment to the country’s security as he embarks on a tour of the Gulf. Rubio is seeking to reassure close US allies — who were hit by Iranian missiles during the Middle East war — about the memorandum of understanding with Tehran, which fails to address some of the Gulf’s long-standing concerns about its missile programme. Iran contends that it targeted US bases and assets in Gulf countries and has not accepted responsibility for all attacks.