NEW DELHI, Monday, Aug. 9 —The Soviet Union and India signed a major agreement to day pledging support of each other if either country is the target of military aggression, Indian political sources reported.

The agreement, believed to be a formal treaty of friendship and nonaggression, was signed by Foreign Minister Andrei A. Gromyko of the Soviet Union and Swaran Singh, the Indian Minister for External Affairs, at a five‐minute ceremony. Then Mr. Gromyko met with Prime Minister Indira Gandhi.

Mr. Gromyko arrived in New Delhi yesterday on a hurriedly arranged visit to demonstrate Soviet support of India in its worsening dispute with Pakistan over the Pakistani Army's suppression of the independence movement in East Pakistan.

The Soviet diplomat on his arrival said he hoped his talks with the Indians would lead to the consolidation of peace in Asia and throughout the world.”