Even as Iran squeezes world energy supplies with its chokehold on the Strait of Hormuz , its own oil industry is increasingly being threatened by an American blockade. With no way to export the oil it is pumping out and diminishing room to store it at home, Iran may be forced to dramatically reduce or cease production from some of its wells, perhaps beginning in as little as two weeks, experts say. The situation likely isn’t as dire as U.S. President Donald Trump recently described, colorfully suggesting pipelines could start exploding within days. But once shut down, production from the aging wells may not be restarted so easily, if at all, undermining Iran’s future oil output. Iran appears to have begun dialing back production already, analysts say, to avert outright shutdowns. The pressure is building as the U.S. Treasury Department ratchets up sanctions on Iranian oil shipments already at sea. The U.S. military has seized at least two tankers off Asia believed to be carrying Iranian oil.…