By Matt SpetalnickWASHINGTON, July 16 (Reuters) - President Donald Trump has ramped up U.S. air strikes on Iran and threatened broader escalation, but there is little sign that a military strategy that has already failed to extract concessions from Tehran will succeed this time.With the collapse of an interim ceasefire deal reached a month ago, Trump finds himself in a bind as he seeks to break Iran’s grip on the vital Strait of Hormuz and force Tehran to accept his demands.

The US is failing to wear down Iran with strikes around the Strait of Hormuz and making no progress to resolve the conflict through diplomacy. James C. Reynolds reviews the…

President Trump has increased U.S. air strikes on Iran, but strategy shows little success. An interim ceasefire deal has collapsed, leaving the U.S. in a difficult situation. Iran…