RAWALPINDI, Pakistan, Dec. 9 —A high Government spokesman sharply condemned the Soviet Union tonight for giving political and material assistance to India in the war against Pakistan.

The spokesman, a ranking Foreign Ministry official who does not ordinarily attend the daily military press briefing, said that the Government here in West Pakistan was investigating press reports that Soviet personnel were commanding Indian missile boats and flying military aircraft in Indian territory.

However, the official sidestepped a question on whether Pakistan would break off diplomatic relations with the Soviet Union if Moscow followed New Delhi's lead in recognizing the rebel government of Bangla Desh (Bengal Nation). Pakistan broke with India on that ground, although neither country has yet formerly declared war on the other.

The spokesman called on the world at large, particularly the big powers, to take appropriate action against what he charged was “naked and barbarous aggression” by India. But, he added, “It is not for me to say what should be done by other governments.”

Warmer Toward U. S.

A decided warming of the climate of public opinion of the United States has been felt here since the outbreak of war. America is thought by many Pakistanis to have sided with Pakistan by condemning Indian actions.

But tonight the spokesman ruled out one of the possible avenues through which Pakistan could appeal to the United States for material assistance. He said that the Southeast Asian Treaty Organization, which was fostered by the United States and of which Pakistan is a member, “has more or less been allowed to wither on the vine.”

This is consistent with Pakistan's all but official withdrawal from the alliance in recent years, while she has been drawing closer to China. Although many Pakistanis of no particular political sophistication seem to expect it as a matter of course, there has been no known shipment of Chinese military aid since the war began.

Access Is Difficult

With the growing physical isolation from the outside world that the war has brought to Pakistan, observers here believe that China could play an important role not only as a furnisher of assistance but also as a channel for aid coming from third‐world countries.

East Pakistan is completely isolated. The only practical land route into the western half goes through landlocked Afghanistan and from there over the Khyber Pass. No commercial airplanes are flying into or within Pakistan. Indian air and naval forces are making access to Karachi, the principal harbor, difficult.

Yesterday, President Agha Mohammad Yahya Khan opened a drive for a National Defense Fund to which he urged the public to contribute. He said he was glad to announce that Government employes in higher‐income brackets had proposed to contribute at the rate of 10 per cent of their pay, and others at 5 per cent.

The President did not specify how this apparently unanimous offer was made.