New Delhi, June 23 -- In a stand-off with a belligerent Chinese People's Liberation Army (PLA) at four points in East Ladakh , India has increased technical drone surveillance of the area even as the Indo-Tibetan Border Police (ITBP) has inducted more battalions into the sector to support army along the 3,488 km Line of Actual Control (LAC), government and military officials familiar with the matter said....