Iran’s foreign minister said Iran would continue to sell its oil despite expanded U.S. sanctions, and warned of unspecified consequences if the U.S. tried to block oil sales that go through the Strait of Hormuz, a vital shipping channel. The foreign minister, Javad Zarif, also extended an offer to the Trump administration to exchange prisoners, citing cases of Iranians detained in Western countries awaiting extradition to the U.S. At least five U.S. citizens are held in Iranian detention. …