June 17, 1981

Mexico announced today that it would raise its oil prices early next month and warned that buyers unwilling to pay the new price might permanently forfeit Mexico as an energy source. The announcement came just two weeks after Mexico lowered its oil prices $4 a barrel, becoming the first major oil exporter to reduce its official price in the face of the current glut on world oil markets. Since then, other oil producers, among them Ecuador, Britain and Norway, have lowered the export prices of their crude oil, and the price of oil on spot markets has dropped sharply. Mexico's announcement today did not indicate whether the full decrease of $4 a barrel would be reinstated, although this was the implication.The decision went in the face of the downward trend in world oil prices, brought on by the world oversupply of oil and declining demand.

An article on the World Bank in The Times Monday incorrectly identified Robert D. Muldoon. Mr. Muldoon is the Prime Minister of New Zealand.

International The sale of American weapons to China has been approved in principle, Secretary of State Alexander M. Haig Jr. announced at the end of a three-day visit to Peking. He told reporters that his talks with Chinese leaders had been ''unusually significant and successful'' and seemed to foreshadow ''a major expansion of Sino-American friendship and cooperation.'' (Page A1, Col. 6.) Israel apparently violated its accord with the United States on the use of American-made weapons when it bombed an Iraqi nuclear reactor on June 6, President Reagan said. But he also told a news conference that Israel ''might have sincerely believed'' that the action was defensive. (A1:5.)

IRANIANS SCHEDULE DEBATE TODAY OVER IMPEACHMENT OF BANI-SADR TEHERAN, Iran, June 16 (By Reuters) - Parliament decided today to begin impeachment proceedings against President Abolhassan Bani-Sadr tomorrow. The debate, which is expected to take three or four days, was scheduled as eight of the President's staff members were arrested and several others were expelled from his offices. Guards at the gates said only two women were left inside. There was no word on the whereabouts of Mr. Bani-Sadr, who has not been seen in public since shortly after Ayatollah Ruhollah Khomeini removed him Wednesday as Commander in Chief of the armed forces.

President Reagan said today that Israel appeared to have violated its weapons agreement with the United States when it bombed an Iraqi nuclear reactor 10 days ago, but that the Israelis ''might have sincerely believed'' their action was defensive in nature. At his news conference this afternoon, the President went further than any Administration official has before in suggesting that Israel had abused an agreement prohibiting its use of American-made military equipment for offensive military actions. Previously, officials had said only that Israel may have violated the agreement and that the matter was being reviewed. However, Mr. Reagan went on to endorse at least some of Israel's justifications for the raid, saying: ''I do think that one has to recognize that Israel had reason for concern in view of the past history of Iraq, which has never signed a cease-fire or recognized Israel as a nation, has never joined in any peace effort for that. So in other words it does not even recognize the existence of Israel as a country.''