The US president said bad things will happen if the Taliban doesnt surrender the key airfieldUS President Donald Trump has threatened unspecified reprisals if the Taliban government in Afghanistan fails to hand over the Bagram Air Base, which was abandoned during the American withdrawal. Trump said earlier that he is seeking to reestablish control over the airfield, which he described as being close to China's nuclear facilities. "If Afghanistan doesn't give Bagram Airbase back to those that built it, the United States of America, BAD THINGS ARE GOING TO HAPPEN!!!" READ MORE: Taliban and China reject Trump bid to re-establish air base in AfghanistanOriginally built by the Soviet Union, the Bagram airfield was modernized and expanded during the US occupation, serving as America's largest outpost in Afghanistan. Trump has repeatedly claimed that China is secretly using the base, a charge denied by both Beijing and the Taliban.