Mattis emphasizes diplomacy in dealing with Iran

US Defense Secretary Jim Mattis said Friday he does not see the need for a stepped-up military posture against Iran, the day after a top diplomat said evidence shows Tehran is supporting Huthi rebels in Yemen.US ambassador to the United Nations Nikki Haley on Thursday presented missile fragments and other military gear that she said came from Iran and had been used against US ally Saudi Arabia.Mattis lambasted Iran for its support of President Bashar al-Assad in Syria, "despite the murder of his