President Donald Trump's war against Iran, now in its sixth month, has placed him in a difficult position with no easy way out. He faces a choice between accepting an interim deal negotiated by Iran and Oman that would give Tehran control over the Strait of Hormuz—a concession it never had before the war—or escalating with new airstrikes that could be politically perilous ahead of November's midterm elections. The first option would formalize Iran's supervision of the vital oil-shipping conduit, which the Trump administration had vowed to prevent, while the second risks prolonging a crisis that has already failed to bring Tehran to its knees.