Washington and London sought to ease concerns over the nuclear accord with Iran. As part of international charm offensive, British Foreign Secretary Philip Hammond met Israeli Prime Minister Benjamin Netanyahu, who strongly opposes the landmark accord struck on Tuesday in Vienna between Iran and six powers including Washington. Hammond sought to reassure Israel during a visit to Jerusalem, saying “robust measures” were in place to make sure it is successful. “Our focus now will be on swift and full implementation of the agreement to make sure that a nuclear weapon remains beyond Iran’s reach,” he said. US Defence Secretary Ashton Carter is also due in Israel next week and Israeli opposition leader Isaacs Herzog is to visit Washington, partly to push for security guarantees. US Secretary of State John Kerry will also head to the Gulf next month to allay fears over the nuclear deal. The announcement came after Kerry held talks in Washington with Saudi Foreign Minister Abdel al-Jubeir, who used the occasion to warn Iran against any further “adventures” in the region. “If Iran should try to cause mischief in the region, we are committed to confront it resolutely,” Jubeir said. The UN Security Council is now expected to endorse the deal on Monday, diplomats said.