Judging by Donald Trump’s outbursts of late, he can’t seem to decide whether reopening the Strait of Hormuz is easy or hard. He also can’t seem to decide whether he needs international allies to help with this urgent task or not. Iran’s blockade on oil shipments exiting the strait—done in response to Trump’s attack—is causing worsening global consequences daily. So it would be useful for Trump to settle these arguments in his own mind already. But Trump’s incoherence on the Strait of Hormuz actually reveals something else, as well: a massive political weakness. .....