PACT WITH SOVIET ON MISSILE CURBS REPORTED IN PERIL
Several authoritative US Adm officials, in interviews, say talks with USSR on strategic arms limitation are in trouble; say Adm does not expect awaited response from USSR to latest US proposals to move negotiations along very much; estimate contrasts with Sec Kissinger's stand that about 90% of negotiations are substantially completed; major unresolved issues are inclusion of Soviet Backfire bomber, US cruise missile and what constitutes a 'large' missile; many officials doubt detente could survive failure to reach accord; say Ford will link any future concessions to USSR to strength of conservative opposition to detente in Repub party; officials say complicating factors include sloppy and hurried negotiations between Ford and Brezhnev in Vladivostok, coupled with several instances of Ford and Kissinger backing away from concessions previously made; also include philosophical differences between Kissinger and Sec Schlesinger over significance of Backfire bomber and benefits of detente, with Kissinger discounting former and Schlesinger latter; officials say Natl Security Council in Sept gave Ford 9 alternative proposals, that Kissinger later gave Min Gromyko one which he knew would be unacceptable; Backfire bomber problem emerged because Kissinger never stated at Vladivostok that it should be included in 2,400 ceiling on strategic offensive weapons; he later raised issue at Pentagon insistence; cruise missile issue was left ambiguous at Vladivostok; Ford, in Helsinki conf with Brezhnev, proposed including air-launched cruise missiles with range of over about 2,000 mi, but has not offered any range limit on sea-launched missiles; this was not accepted; issue of how to define heavy missile dates back to '72 interim agreement on offensive weapons, USSR then agreeing to limit deployment of large SS-9's to 309; USSR has continued to stress heavy missiles and wants to retain this advantage; issue of verification of MIRV's has been settled in principle, with USSR agreeing any missile tested with MIRV's should be considered as counting against 1,320 ceiling in this category; Brezhnev however has told Ford he will make this concession only if Ford makes concessions on Backfire and cruise missiles (M)