France ordered troops to guard ports and the international airport in its Pacific territory of New Caledonia as a state of emergency started Thursday after two nights of riots left four dead and hundreds wounded. Turmoil erupted after France's national assembly backed hotly-disputed changes to voting rolls that indigenous Kanak leaders say will dilute their vote. Mark Owen speaks to Mikaa Blugeon-Mered, adjunct lecturer on French Overseas Territories' Geopolitics at Sciences Po.