• French airliner company Air France's planes are parked on April 24, 2018 on the tarmac of the Roissy-Charles de Gaulle airport near Paris as company staff stage a second consecutive day of strikes calling for a pay rise. - The CEO of Air France-KLM threatened on April 20 to resign if Air France staff continue to reject his wage proposals following nine days of strikes in the past two months. Staff and management at the French carrier have been locked in a dispute over pay since February. Unions say workers deserve to benefit from years of belt-tightening that have returned the carrier to operating profitability, after seeing their wages effectively frozen since 2011. Management says it cannot afford their demands of a 5.1 percent increase this year, saying it would undo the benefits of the restructuring efforts. (Photo by STEPHANE DE SAKUTIN / AFP)        (Photo credit should read STEPHANE DE SAKUTIN/AFP via Getty Images)