Evacuating the embassy officials from Afghanistan's Kabul and bringing them back home was a "difficult and complicated exercise" for India, External Affairs Minister S Jaishankar said today, hours after a special Air Force flight brought back the envoy, along with other staff members and Indo-Tibetan Border Police troops. "Movement of the Indian Ambassador and the Embassy staff from Kabul to India was a difficult and complicated exercise. Thank all those whose cooperation and facilitation made it possible," Mr Jaishankar tweeted this evening.