U.N. Ambassador Vernon Walters endorsed Thursday face-to-face talks between Iran and Iraq to resolve their differences over ending the nearly eight-year Persian Gulf war. "I don't believe it is possible for two countries to make peace without face-to-face discussions. I have never heard of a peace being achieved entirely through third parties. But it is perfectly obvious that face-to-face talks must take place between the two parties who have been at war," Walters, the U.S. delegate to the United Nations, told reporters. Iran has rejected Iraq's call for immediate face-to-face negotiations as a condition to a U.N.-sponsored cease-fire.