Kuwait Airways announced an expanded, $6 billion deal with Airbus that includes 31 new planes on Monday, restructuring an agreement struck in 2014. The deal comes after occasionally “heated” negotiations following probes over allegations of kickbacks surrounding the initial, 25-plane order. “We have managed to agree on a monumental restructuring that will position Kuwait Airways in a much stronger place to succeed for the next 15 years,” company chairman Ali Al-Dukhan told a news conference. The new agreement includes nine Airbus A320neo, six A321neo, three A321neo LR, four A330-800neo, seven …