YOST CALLS ON U.N. TO ASK EXTENSION OF MIDEAST TRUCE
Yost, in Gen Assembly s, says US asks UN Gen Assembly to recommend 3-mo cease-fire extension and urges parties involved to restore 'conditions of confidence' necessary for resumption of talks; illus; submits draft resolution intended as counterproposal to 16-nation resolution; US resolution fails to mention reptd UAR violations but refers to 'obstacles and difficulties;' Yost says US has 'incontrovertible evidence' that UAR violated cease-fire in most explicit pub statement on issue by US official; says country from which missiles came must share responsibility for violations, seen as reply to Gromyko, who said USSR was not party to any cease-fire accord; says USSR supplied mil personnel for training and advisory purposes and in some cases actual combat; holds US recognizes need for taking legitimate concerns and aspirations of Palestinians into acct and that US has no preconceived notions about what form Palestinian participation should take; says it is unclear what Palestinians want to achieve and what their ties with established Arab govts are; says Palestinians themselves must resolve these issues; Syrian repr Tomeh charges Eban insulted Assembly's intelligence by trying to argue that Israel did not start '67 war, s; illus; el-Zayyat says US and Israeli references to missiles are pretext for blocking talks, s; cites Israeli repts quoting Dayan as saying that present and future US arms shipments have neutralized missiles and widened mil gap in Israel's favor; Moroccan delegate Benhima recalls that US urged Assembly to refrain from debate and leave field to quiet diplomacy but notes US arms shipments and queries whether debate or is more likely to disrupt peace, s; GB and France seen restraining themselves for possible effort to bring about compromise resolution if US and 16-nation resolutions fail to gain wide support