In feb 1966, Sheikh Mujib the leader of Awami league announced his 6 points, which demanded maximum autonomy for East pakistan.Later on, these points became the basis for the separation movement by Bengalis.
Liaquat - Nehru Pact

Liaquat Ali khan and Nehru signed a pact on 8th april 1950 in delhi.According to this agreement, both the countries agreed to protect the rights of their minorities and undertook to stop propaganda against each other.
Simla Accord

The 1971 Indo-pak was abd the insurgency of bengalis resulted in the separation of east pakistan. The way brought in its wake many issue, which included the release of PoWs, trial of selected PoWs, return of Baharis to pakistan and recognition of bangladesh . In july 1972, Z.A.Bhutto and Indira Gandhi signed an Accord in simla which is historically known as simla accord