India has always been wary of its "chicken neck" land congestion bordering Sikkim and nearby disputed Arunchal Pardesh. Any deep invasion by PLA would give in easy way to part India in two and annexation of AP by China. This provided the seed of Indian intrest in east-Pakistan after 1962 humiliation.
India during the Indra era can be best described as democratic communism. All the Indian principles emerged from the Soviet ideals. In a classic chain of events Indian nefarious plans in Bangladesh (then east-Pakistan) started with preparation of pro-socialists leader Mujib and marketing his brand name to poor pessants of east-pakistan, a well used communist trick. Framing stories of Bengali discrimination in the west which contanary to Indian propoganda was totaly false. Bengalis made the largest pool of then Pakistani intellactuals as well a strong representation of best and brightest Bengali talents in armed forces.
Indian sponsored propoganda against west and staged event by indian backed terrorism largely led the pessants in beliving and voting for Mujeeb but his idealogies and connections with India did not sit well with Pakistani intelligence.India hoped to either annex break away Pakistan or turn it into a client state.
Post sepration Bangladesh came as a shock and awe for average Bengali. With economy in total collapse and open indian looting of scrap metal Bangladesh was left poorer and worst making average Bengali wonder if nationalism was all that worth to pay for. Mujeeb on other hand kept asserting his power, banned all political parties, started his own private millita and moved closed to India & USSR.
Eventually, few officers alerted by detrioting country situation in the hands of Mujeeb moved in with a plot of coup and sparked a series of counter coups. The largest blow with Mujeeb assasination came to Indian plans of turning Bangladesh into a client state. The Bengalis had a political dispute with Pakistan but the theory of two nations was still alive and kicking. 35 years later India is still at disparity to find accecptable influence in Bangladesh and once again needs election rigging to bring its conspiracy partners AL into power.
Mujeeb merely seprated an already seprate country by few thousand kilometers however the presence and birth of Bangladesh cannot be debated without factoring in the role of Jinnah in creation of Pakistan.
The current AL regime in India is dedicated in its blood and sweat to glorify dubious Indian role in its independence.