President Hassan Rouhani, who normally presents Tehran’s mild-mannered face, called White House policy “mentally retarded.”...A spokesman for Iran’s Atomic Energy Organisation said that one of those deadlines would expire on Thursday, with Iran potentially exceeding a limit imposed under the deal to keep its stockpile of enriched uranium below 300 kg. The IRIB news agency quoted spokesman Behrouz Kamalvindi as saying that after the deadline Iran would speed up its rate of producing the material. Another threshold bars Iran from enriching uranium to a purity beyond 3.67 percent fissile material. It has set a deadline of July 7 after which...