s ▁ability ▁to ▁protect ▁Bh ut an ▁against ▁China ▁while ▁fighting ▁a ▁two - front ▁war ▁involving ▁Pakistan . ▁Despite ▁good ▁relations , ▁India ▁and ▁Bh ut an ▁did ▁not ▁complete ▁a ▁detailed ▁dem arc ation ▁of ▁their ▁borders ▁until ▁the ▁period ▁between ▁ 1 9 7 3 ▁and ▁ 1 9 8 4 . ▁Border ▁dem arc ation ▁tal ks ▁with ▁India ▁generally ▁resolved ▁disag re ements ▁except ▁for ▁several ▁small ▁se ctors , ▁including ▁the ▁middle ▁zone ▁between ▁S arp ang ▁and ▁G ey leg ph ug ▁and ▁the ▁eastern ▁front ier ▁with ▁the ▁Indian ▁state ▁of ▁Ar un ach al ▁Pr adesh . ▁ ▁Ind o - B h ut an ese ▁relations ▁par ▁ 1 9 7 2 ▁ ▁Although ▁relations ▁remained ▁close ▁and ▁friendly , ▁the ▁Bh ut an ese ▁government ▁expressed ▁a ▁need ▁to ▁ren eg oti ate ▁parts ▁of ▁the ▁treat y ▁to ▁enh ance ▁Bh ut an ' s ▁so vere ig nt y . ▁Bh ut an ▁began ▁to ▁slowly ▁assert ▁an ▁independent ▁attitude ▁in ▁foreign ▁affairs ▁by ▁joining ▁the ▁United ▁Nations ▁in ▁ 1 9 7 1 , ▁recogn ising ▁Bang l adesh ▁and ▁signing ▁a ▁new ▁trade ▁agreement ▁in ▁ 1 9 7 2 ▁that ▁provided ▁an ▁exem ption ▁from ▁export ▁duties ▁for ▁goods ▁from ▁Bh ut an ▁to ▁third ▁countries . ▁Bh ut an ▁ex ert ed ▁its ▁independent ▁st ance ▁at ▁the ▁Non - Al igned ▁Mov ement ▁( NA M ) ▁sum mit ▁conference ▁in ▁Hav ana , ▁Cuba