Delhi, April 30
India and Pakistan made some small and perhaps futile attempts today to resolve the present political crisis—which threatens to disrupt the peace and stability of South Asia—by relaxing restrictions on the movements of diplomats who were serving in the now defunct missions in Dacca and Calcutta.

But although tension on the diplomatic front eased slightly, reports from the Indo-Pakistan border about 70 miles from Calcutta indicated that the two countries were squaring up for a big border confrontation.

The para military Indian border security force, stationed at Lakshmipur, near the East Bengal frontier, claimed that there had been another exchange of fire across the border after a Pakistan patrol had tried to enter Indian territory.

It is believed that the Pakistanis were trying to pursue East Bengal guerrillas who are making sorties across the border to attack the Pakistan Army in hit-and-run raids.

The Indian Government claimed today that the Pakistan Army had begun to "make aggressive sorties" up to the international border at the Bongaon checkpost and the railhead at Gede, about 70 miles north-east of Calcutta.

Mr. Z. A. Bhutto, the West Pakistan leader, said in Rawalpindi today that he did not rule out the possibility of war between India and Pakistan. He also hinted that China, Pakistan's main ally, would intervene if a war broke out. Mr. Bhutto said that he had thanked the Chinese Ambassador for Peking's prompt promise of support in Pakistan's struggle to preserve its territorial integrity.