PAUL LORGERIE and TIEMOKO DIALLO Freed Malian politician Soumaila Cisse, French aid worker Sophie Petronin and two Italians arrived in Bamako on Thursday aboard a Malian military transport plane, ending their lengthy captivity in the hands of Islamist insurgents. They were greeted by jubilant scenes on the tarmac at Bamako airport, with Petronin’s son Sebastian Chadaud-Petronin picking her up and crying out: “Mama! Mama! Mama! Mama!” videos and photographs shared on social media showed. Sebastian Chadaud-Petronin and his mother Sophie Petronin Cisse hugged a relative and later entered a vehicle as supporters chanted his name. They were driven to the…