whatever happened in 1971 no body can change it now, all of us have some pieces of information but not the complete true story.I have one question here (if we suppose that independence of Bengal was necessary) why bengalis supported mukti bahni they should get freedom as all of us got from britain I mean politically. They supported mukti bahni , Bhutto and Yehya got the excuse to launch operation and as the situation became worse india jumped into the scene.
As far as I know then East Pakistan people and Mujib himself along with Awami League wanted autonomy along the 6 point demand, not complete independence:
Six point movement - Wikipedia, the free encyclopedia
The 6 points
1. The constitution should provide for a Federation of Pakistan in its true sense based on the Lahore Resolution and the parliamentary form of government with supremacy of a Legislature directly elected on the basis of universal adult franchise.
2. The federal government should deal with only two subjects: Defence and Foreign Affairs, and all other residual subjects should be vested in the federating states.
3. Two separate, but freely convertible currencies for two wings should be introduced; or if this is not feasible, there should be one currency for the whole country, but effective constitutional provisions should be introduced to stop the flight of capital from East to West Pakistan. Furthermore, a separate Banking Reserve should be established and separate fiscal and monetary policy be adopted for East Pakistan.
4. The power of taxation and revenue collection should be vested in the federating units and the federal centre would have no such power. The federation would be entitled to a share in the state taxes to meet its expenditures.
5. There should be two separate accounts for the foreign exchange earnings of the two wings; the foreign exchange requirements of the federal government should be met by the two wings equally or in a ratio to be fixed; indigenous products should move free of duty between the two wings, and the constitution should empower the units to establish trade links with foreign countries.
6. East Pakistan should have a separate militia or paramilitary force.
There were some Bihari killings before Operation Searchlight was started by Bhutto-Yahya, between March 1-25, 1971, but it was sporadic and not large scale. All parties should have come to a compromise. Even Mujib was ready to accept conditions given by Bhutto, but he changed his mind, because of hard-core Tajuddin, an Awami League leader, who we suspect was close to India and its RAW. The negotiation broke down. I cannot see why Bhutto could not accept the above conditions? Also, why Mujib could not compromise and accept what Butto wanted? And whatever happened Why Bhutto-Yahya had to give the go ahead for Operation Searchlight?
The prevailing mood among East Pakistan people changed overnight from autonomy to independence when Operation Searchlight was authorized and commenced on the night of March 25, 1971 (we call it the black night) as tanks started roaming in streets of Dhaka. Zia read the declaration of independence on March 26, which is our independence day.
Mukti Bahini, if elements of it was trained by RAW before 25th March, had little support among East Pakistan public before that day, but after the night of 25th March and Zia's declaration of independence, public support naturally went towards independence and Mukti Bahini, people no longer cared if it was trained by India or not. From that point on, out of necessity majority in East Pakistan looked towards India for help in our efforts for independence.