November 5, 1983

Israel reacted to the bombing of its headquarters in Tyre, Lebanon, today with a series of military steps and statements designed to regain a posture of determination and resolve. Defense Minister Moshe Arens indicated that retaliation might be taken beyond the two air strikes conducted against Palestinian factions near the Beirut-Damascus highway. ''We'll hit back against those who commit these criminal acts,'' he said on the army radio. ''We, of course, will investigate what happened, how it happened, what must be done in order to assure that this won't happen in the future.'' He ordered the appointment of a commission of investigation.

A truck loaded with explosives crashed through the entrance to an Israeli headquarters compound here today and detonated near the main building, killing at least 39 people and wounding 32. A few hours later, Israeli jets struck at Palestinian targets along the Beirut- Damascus Highway, knocking out a command post and a number of tanks and artillery pieces. Some reports said they also attacked Syrian positions.As many as 60 people were reported killed. (Page 8.)

The Reagan Administration made public today copies of what it said were five secret military cooperation agreements concluded by the former Government of Grenada with Cuba, the Soviet Union and North Korea. Administration officials said the documents called for the delivery of $37 million in military equipment to Grenada and the permanent basing of 27 Cuban military advisers there. Administration officials said the documents, which were found by American forces that invaded the island last week, supported President Reagan's assertion that Cuba and the Soviet Union were turning Grenada into a military bastion. 49 Russians Leave Grenada Early today the 126 occupants of the Soviet Embassy in Grenada, including 49 Soviet citizens, 53 Cubans and 15 North Koreans, were flown off the island and taken to Merida, Mexico. (Page 4.)

News Analysis WASHINGTON, Nov. 4 - The suicide attacks on American, French and Israeli forces over the last 12 days have quickened Washington's determination to alter its policy in Lebanon by forging a closer strategic bond with the Israelis, American officials said today. They said they hoped to create such a bond now to take advantage of what they regard as a growing convergence of American interests with Israel's. By coincidence, Under Secretary of State Lawrence S. Eagleburger was in Israel winding up a mission aimed at reducing the misunderstandings and distrust of the last two years when the terrorist explosion occurred at an Israeli compound in Tyre. A goal of his trip was to persuade the new Prime Minister, Yitzhak Shamir, to make an early trip to Washington for discussions on how the two countries can collaborate in these tense times in Lebanon and the Middle East. A Major Shift for U.S. This represents a major shift in American thinking about Lebanon, a shift caused both by the diplomatic stalemate over the country's future and a major buildup of Syrian forces. Ever since Israel pulled its troops back from the Shuf Mountains against the advice of the American and Lebanese Governments in early September, the Administration has feared that the Syrians may be under the impression that they can force Israel and the United States out of Lebanon without making any concessions themselves.

The United States Embassy here is pressing the Government to take action against a number of army and security officers who are said to be ''highly suspected'' of involvement in assassination squads, according to high-ranking embassy officials. The officers said to be involved include the head of security for the Constituent Assembly, two provincial commanders and the directors of intelligence for two of the country's security forces. Hector Antonio Regalado, the head of security for the Constituent Assembly, is said to be the ''head of the thing,'' according to well-placed officials here. Many Thousands Killed Mr. Regalado is known as a close friend of Roberto d'Aubuisson, the president of the Assembly, and was hired by Mr. d'Aubuisson to direct security for the Assembly.