Security Breaches Eyed as Search for MAS 370 Continues
Questions mount about why security or immigration officials did not intercept the two Iranians who boarded with stolen Austrian and Italian passports.
Within hours of the apparent shooting down of a Malaysian Airlines Boeing 777 over eastern Ukraine, the country's aviation authorities completed closed the airspace in the Dnipropetrovsk flight information region. [Photo: Aero Icarus]
Within hours of the apparent shooting down of a Malaysian Airlines Boeing 777 over eastern Ukraine, the country's aviation authorities completed closed the airspace in the Dnipropetrovsk flight information region. [Photo: Aero Icarus]

As the search for the presumed wreckage of Malaysia Airlines Flight 370 entered its fourth day Tuesday, questions mounted about why security or immigration officials did not intercept the two Iranians who boarded with stolen Austrian and Italian passports. Although Interpol has expressed doubt that the two men presented a terrorist threat, the apparent inadequacy of a system that allowed them to board the missing Boeing 777-200 for China continues to confound international law enforcement officials.