May 28, 1970

Adm official raises threat that Nixon will veto any measure on Cambodia that curbs his const powers as Comdr in Chief; makes it clear that Adm finds Cooper-Church amendment unacceptable; Griffin denies Mansfield charge that some Repubs are 'stalling operations' to delay vote on amendment; Sen Dole reintroduces amendment specifying that prohibition against retaining Amer forces in Cambodia will not apply if Pres determines that US citizens or natls are held as POWs in Cambodia

Yem Sambaur and Tran Van Lam sign documents giving S Vietnam broad and open-ended mandate for mil operations in Cambodia, communique on Saigon talks; accord places no geographic curbs on S Vietnam mil operations nor does it set any timetable for withdrawal; mins say S Vietnamese troops will withdraw when they complete their mission; Yem Sambaur excludes any possibility that his Govt will come to terms with Norodom Sihanouk; communique repts accords include restoration of diplomatic relations, accord on econ cooperation and on treatment of Vietnamese residents of Cambodia; US and Cambodia reptdly have agreed to raise level of their diplomatic representation by an exch of ambs; US reptdly consents to apptmt of Amb Sonn Vansay, now serving in France; US Embassy, Pnompenh, silent; Soviet sources believe USSR Amb will be recalled as an expression of Soviet displeasure with Cambodian alignment with anti-Communist camp; withdrawal foreshadowed by harsh Soviet statement to Yem Sambaur scoring intrusion by US and S Vietnamese forces, demanding their withdrawal and scoring Pnompenh-US rapprochement; Norodom Sihanouk and N Vietnamese leaders are reptd in accord on ways to cooperate in fighting US and allied forces in Cambodia, rept on formal talks held in Hanoi; Norodom Sihanouk welcomed by Pres Ton Duc Thang and Premier Pham Van Dong, Hanoi, illus

S Vietnam Pres Nguyen Van Thieu says S Vietnamese troops will continue to operate in Cambodia for an indefinite period after withdrawal of US units and will require continued Amer logistical and combat support to sustain their operations, int with NY Times ed C Daniel, says he has no specific agreement with Nixon on Amer aid for future operations in Cambodia but appears confident of getting such support, suggests S Vietnam, Thailand, Cambodia and Laos join in anti-Communist alliance

ROME, May 27—Fifteen For eign Ministers of the North Atlantic Treaty Organization tonight invited the Soviet Union, the Warsaw pact powers and other interested govern ments to explore mutual and, balanced reduction of forces in Central Eurone.

HR, 176-163, approves $290-million appropriation to extend development of 2 prototype craft, conservationists encouraged by close vote, predict Sen will reject appropriation later, debate on project