U.S. SAYS INDIANS BEAR MAIN BLAME
US State Dept official says major responsibility for increased hostilities on subcontinent is India's, though start of crisis was Pakistan's use of force, news conf; Sec Rogers announces US joins request for Security Council meeting, saying decison was made because deteriorating situation poses threat to internatl peace and security; State Dept spokesman says US hopes Council can take prompt steps to bring about cease-fire and withdrawal; Sen M Mansfield charges Adm with 'foot-dragging,' holding US should have gone to Council 2 wks ago; cites Nixon friendship with Yahya Khan as possible explanation for belated recourse to UN; Pres press sec Ziegler says US cannot look with anything but dismay on movement of mil forces across border, charging India with launching extensive mil movement in E Pakistan; State Dept officials indicate question of cutting off $225-million yrly econ aid to India is under consideration