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US and Iran close to nuclear deal, Trump says
US President Donald Trump says that Iran has "sort of" agreed to the terms of a nuclear deal with the United States.
Trump described the latest talks between the two countries, which ended on Sunday, as "very serious negotiations" for "long-term peace".
Earlier, an adviser to Iran's supreme leader told NBC News that Tehran was willing to make concessions on its nuclear programme in exchange for the lifting of sanctions.