First,Bangladesh was created by the will of Bengalis and not India acting on its own whim and power .
Are Bangladeshies really grateful to India for her help?
Pakistani's have no hatred of Indian people.
Pakistanis do have a dispute over Kashmir which is the centerpiece of the on going problem with India.Everyone knows that India is the oppressor in Kashmir and has no standing to annex Kashmir or take away the right of self determination from the Kashmiri people.
Pakistan does not bankroll terorists and has not sent any terrorists into India.If there were any terrorists whether home grown or from across the border,they are only reactionaries to India's brutal hold on Kashmir,killing over 100,000 Kashmiris in ten years in extra-judicial killings or fake encounters. That would be enough to boil anybody's blood.
India has constantly stirred up terrorist activity in Balouchastan and near Wazirastan.
India has also set up tens of counsulates along the Afghan-Pak border to fan unrest, promote discontent and to process, recruit terrorists.
So,the lesson to take home for India is to let Kashmiris self determine their fate and let the chips fall wherever they may and put an early end to a war of thousand years.