North’s air cargo: missiles North Korea has continued to export its missiles to a frequent buyer, Iran, South Korea and U.S. intelligence sources said yesterday. But the shipments are now going by air; the officials believe that the North switched to air shipments because one of its ships loaded with missiles was intercepted on its way to Yemen in December. The new intelligence was apparently one of the reasons for the timing of the meeting last week in Spain, led by the United States, to discuss with other countries ways to cut off the proliferation of mass weapons. The intelligence...