By Kanishka Singh and Bo Erickson WASHINGTON, Aug 4 (Reuters) - U.S. President Donald Trump said there was an "all-day negotiation" on Tuesday with Iran, characterizing the talks positively while also threatening to hit Iran "really hard" if a deal with Tehran was not reached. DETAILS AND QUOTES: • "They had an all-day negotiation," Trump told Fox News' "@ Night" show. • "We are having very good discussions," he added.
