The US announced a blockade against ships calling at Iranian ports, ramping up pressure on the Middle East nation after marathon peace talks over the weekend ended without a deal. Action was due to start Monday at 10am New York time (10pm Hong Kong), according to US Central Command. Vessels transiting the Strait of Hormuz to and from non-Iranian ports won’t be affected, it said. President Donald Trump had earlier said that the blockade would cover all ships using the vital waterway. “Any Iranian...