LONDON - Iran could face UN sanctions if it does not accede to demands that it suspend its nuclear enrichment program, Britain’s foreign secretary warned on Tuesday. The UN Security Council has set a deadline of Friday for Iran to suspend enrichment of uranium, a process that can produce fuel for nuclear reactors or material for warheads. “The Iranians, in my judgment, would miscalculate if they believed that Russia or China would block appropriate and effective sanctions, which targeted the regime, not the ordinary population,” Foreign Secretary Jack Straw said in the House of Commons. “Without going into detail, of...