US fingers Iran on Gulf attacks but eases tone

President Donald Trump's administration charged Tuesday it was "quite possible" Iran was responsible for the sabotage of Gulf oil interests but said its own robust response had prevented potential attacks on Americans.Top Trump officials appeared to be toning down weeks of fiery warnings to Iran before delivering a classified briefing to the full Congress, where opposition Democrats have accused the administration of hyping intelligence and pushing the United States dangerously close to war.Secr