India retaliates following Pakistan's Operation Grand Slam which results in the Indo-Pakistani War of 1965 that ends in a stalemate and follows the signing of the Tashkent Declaration.
The Tashkent Declaration was a peace agreement between India and Pakistan signed on 10 January 1966 that resolved the Indo-Pakistani War of 1965. Peace had been achieved on 23 September by the intervention of the external powers that pushed the two nations to cease fire, afraid the conflict could escalate and draw in other powers.
Operation Grand Slam was a key military operation of the Indo-Pakistani War of 1965. It refers to a plan drawn up by the Pakistan Army in May 1965 that consisted of an attack on the vital Akhnoor Bridge in Indian-administered Jammu and Kashmir. The bridge was not only the lifeline of an entire infantry division of the Indian Army, but could also be used to threaten the city of Jammu, an important logistical point for Indian forces. The operation ended in a failure for the Pakistan Army as the stated military objectives were not achieved, and Pakistani forces were subsequently forced to retreat following a counterattack by the Indian Army whereby a new front was opened in the Pakistani province of Punjab.