The 2017 Doklam crisis which played out between China and India in a part of Bhutan located east of Sikkim ''appears to have shifted China's strategic objectives, with China more than doubling its total number of air bases, air defence positions and heliports near the Indian border over the past three years". Details of the Chinese expansion, accessed by NDTV, have been spelt out in a report by Stratfor, a leading global geopolitical intelligence platform. The report outlines China's military-infrastructure build-up through a detailed analysis of satellite images of military facilities that have a direct bearing on India's security. We speak to Sim Tack, Senior Global Analyst, Stratfor.