Among them two reasons were that: firstly, Pakistan belonged to American led military Pact, CENTO and SEATO; secondly, US believed any victory of India will be considered as the expansion of Soviet influence in the parts gained by India with the victory, as it was believed to be a pro Soviet nation, even though they were non aligned.

Indians were preparing for war and were concentrated on the Eastern front.Hearing this, on December 9, Nixon decided to send the aircraft carrier USS Enterprise into the Bay of Bengal to threaten India.