India–Myanmar border
The India–Myanmar border is the international border between India and Myanmar (formerly Burma). The border is in length and runs from the tripoint with China in the north to the tripoint with Bangladesh in the south. Background Description The precise location of the tripoint with China is unclear owing to the Sino-Indian border dispute - at present, the de facto tripoint is located just north of the Diphu Pass. From here the border proceeds to the south-west through the Mishmi Hills, except for an Indian protrusion at the Chaukan Pass, then continuing through the Patkai and Kassom Ranges. At the south-east corner of Manipur it turns sharply westwards along various rivers for a period over to the Tiau River. It then follows this river southwards for a long stretch down to the Chin Hills, before turning west and proceeding to the Bangladeshi tripoint via a series of irregular lines. History Historically the border region has been a contested area located at the edge of the various Indian and Burmese empires. Britain had begun conquering India in the 17th century, and gradually took control of most of the country, forming British India. From the 1820s-80s Britain also gradually conquered Burma; by the Treaty of Yandabo in 1826 which ended the First Anglo-Burmese War Burma recognised British control over Assam, Manipur, Rakhine (Arakan), and the Taninthayi coast, thereby delimiting much of the modern boundary in general terms. In 1834 the Kabaw Valley areas was returned to Burma and a modified boundary delimited in this region, dubbed the 'Pemberton line' after a British commissioner, which was later refined in 1881. In 1837 the Patkai Hills were unilaterally designated as the northern boundary. Large swathes of Burma were annexed following the Second Anglo-Burmese War of 1852–53. The remainder of Burma was conquered in 1885 and incorporated into British India. In 1894 a boundary between Manipur and the Chin Hills was delimited, and the existing 'Pemberton line' boundary modified again in 1896. Further boundary modifications were made in 1901, 1921 and 1922. In 1937 Burma was split off from India and became a separate colony. In 1947 India gained independence, however the country was split into two states (India and Pakistan), with the southernmost section of the Burma-India border becoming that between Burma and East Pakistan (modern Bangladesh). Burma gained independence in 1948. On 10 March 1967 Burma and India signed a boundary treaty which delimited their common frontier in detail. Security along the border has often been poor, owing to ongoing conflicts in north-east India and western Myanmar. Barrier The India–Myanmar barrier is a border barrier that India is constructing to seal its -long border with Myanmar. India hopes to curtail cross-border crime, including goods, arms and counterfeit currency smuggling, drug trafficking, and insurgency. The United Nations Drug Control Programme (UNDCP) and International Narcotics Control Board (INCB) also warned that the region could become a significant transit point for illicit drugs . Indian security forces blamed the porous border for the deaths of 200