The United States and the European Union threatened “additional measures” against Iran late Monday over its suspect nuclear activities and reiterated that it must address international concerns. Britain, Canada and the United States slapped sanctions last week on Iran’s financial, petrochemical and energy sectors, and the European Union is expected to follow suit after the bloc’s foreign ministers meet on Thursday. After a US-EU summit in Washington on Monday, Washington and Brussels underlined their determination “to work toward a diplomatic solution” to the Iranian nuclear crisis, as speculation grows of a possible Israeli strike. The US-EU joint statement said they would “consider additional measures given Iran’s continued failure to abide by its international obligations.”