ISTANBUL The US is in negotiations with Denmark to secure access to three additional defense areas in Greenland, a senior US military official said, according to a report published Tuesday. Gregory Guillot, commander of US Northern Command, told a Senate hearing on March 19 that the US is seeking to extend its military footprint beyond Pituffik Space Base, the former Thule Air Base in northern Greenland, the daily Berlingske reported. Guillot said the discussions are unfolding within the