Washington/Dubai, May 1 -- The US and Iran showed little sign of breaking their impasse and agreeing to another round of peace talks, with President Donald Trump examining options for new strikes on Tehran ahead of a deadline to seek Congressional approval to extend the conflict. Trump told Axios the blockade of Iran's ports is "somewhat more effective than the bombing" and "choking" the country by restricting its oil exports. At the same time, US military commanders are set to brief Trump on new plans for Iran, Axios reported, citing unnamed sources. Centcom, which oversees US forces in the Middle East, has prepared a plan for a short wave of strikes on Iran to break the negotiating deadlock, Axios said. Brent oil rose to a wartime high as...