Pakistan did not become a permanent enemy after the bangladesh war! they were already a permanent enemy. Are you forgetting 1964 and 1947? If anything the 1971 war weakened pakistan to the extent that India could focus on its economy.
Bangldesh has become an enemy only now, due to rising islamic fundamentalism. We were good friends throughout the 70's and 80's. Times change, it is time we treated bangladesh accordingly.
Do you know the '100,000' and '10,00,000'? we had 10million refugees come to india in a period of 9 months in 1971 !! What makes you think india was capable of hadling that?? More importantly about 1 million people were brutally murdered in bangladesh in the same time. That means at a faster rate that even hitler!! How can you condone staying quiet??!! It was probably one of the few genuine decisions taken to go to war.