A new burst of diplomatic action intensified Thursday in a push to break the deadlock between the United States and Iran. Weeks of negotiations amid the ceasefire have centered on a deal that could curb Iran’s nuclear program and restore shipping traffic through the crucial Strait of Hormuz trade route.Oil prices have soared amid the conflict, but the international benchmark Brent crude fell below $105 per barrel early Thursday.U.S. Marines boarded an Iranian flagged tanker — the Celestial Sea — that attempted to violate the American maritime blockade, the U.S. military said Wednesday. This standoff over the Strait of Hormuz has throttled global shipping and threatened widespread disruption of energy and food supplies. Is United States the world ” police” ?

