Indo-Bangladesh relations was strained because of one of the followings reasons :

The failure to agree on sharing the waters of the Teesta river strained India-Bangladesh relations, especially after the agreement expected during Prime Minister Manmohan Singh's visit to Dhaka in 2011 could not be signed because of objections from West Bengal. The Akhaura-Agartala rail link and border markets (haats) along the Meghalaya border were cooperative projects that improved relations. The enclaves issue was later settled by the Land Boundary Agreement of 2015.