Iran's top leader set out a series of conditions on Wednesday for European powers if they want Tehran to stay in a nuclear deal after the US exit, including steps by European banks to safeguard trade with Tehran and guaranteeing Iranian oil sales.\u00a0US\u00a0President Donald Trump pulled out earlier this month from the 2015 nuclear deal that had lifted sanctions on Iran in exchange for curbs to its nuclear programme. European powers see the accord as the best chance of stopping Tehran acquiring a nuclear weapon and have intensified efforts to save it. "European banks should safeguard trade with the Islamic Republic. We do not want to start a fight with these three countries (France, Germany and Britain) but we don't trust them either,\u201d Iranian Supreme Leader Ayatollah Ali Khamenei was quoted as saying by his website. Khamenei also said European powers must promise they would not seek new negotiations on Iran's ballistic missile programme and regional Middle East activities, adding: "Europe should fully guarantee Iran\u2019s oil sales. In case Americans can damage our oil sales., Europeans should make up for that and buy Iranian oil." Khamenei said that over the past two years the United States "has repeatedly violated" the nuclear deal but the Europeans had remained silent. He asked Europe to "make up for that silence\u201d and to "stand up against the U.S. sanctions.\u201d Khamenei accused the United States of violating U.N. Security Council Resolution 2231 that underpins the nuclear agreement with Iran, and asked Europe to secure \u201ca resolution against the U.S. violation\u201d. He warned that if the Europeans did not meet these demands, Iran would resume its enrichment of uranium, halted under the deal to minimise the risk of Tehran developing the means to build nuclear weapons.