Iran’s ambassador to the United Nations in Geneva on Tuesday ruled out for now any negotiations with the United States, three days after the US and Israel launched joint strikes on his country.Explosions rocked Tehran again on Tuesday, and financial markets around the world tumbled amid fears of a prolonged disruption to global energy supplies. US President Donald Trump and Israel’s Prime Minister Benjamin Netanyahu have given open-ended answers when asked how long the war might last.For all the latest headlines, follow our Google News channel online or via the app.Ali Bahreini, ambassador of the Iranian mission to the UN in Geneva, told reporters that Iran had not contacted the US either directly or indirectly about holding talks to de-escalate the conflict or about resuming negotiations over Tehran’s nuclear program.Asked about the prospects for any talks, Bahreini said: “For the time being we are very doubtful about the usefulness of negotiation... The only language for talking with