JERUSALEM — A former visiting professor at Bar-Ilan University, who taught a class in military theory, said his teachings may have aided Yigal Amir in allegedly murdering Prime Minister Yitzhak Rabin.

Uri Milstein, who taught at Bar-Ilan from 1989 to 1993, and who has criticized Yitzhak Rabin, the army, and the Shin Bet domestic security service, said Wednesday of last week that Amir took his class in 1993 and studied "theories which helped him improve his actions."

Amir, whom Milstein described as a "good" and "very interested" student, also invited him to be the featured speaker to a group of Bar-Ilan students who spent a Shabbat in Jerusalem in August.

"Milstein is a very provocative person," said one student who was at the weekend. "Yigal spoke to him a lot."

At that weekend, Milstein said he gave a lecture about his new book, "The Rabin File: How the Myth Swelled," which harshly criticizes Rabin.

Amir bought that book and two others that weekend, Milstein said. Police said "The Rabin File" was one of the books found in Amir's room after the assassination.

In his books, Milstein argues that threats to governments come mostly from within the government itself, and that the head of a department is the most dangerous figure in the department because he guards secrets and prevents improvements.

According to this theory, Rabin was Israel's most dangerous enemy.

Milstein also pointed to weaknesses in such organizations as the Israel Defense Force and Shin Bet, which he says may have helped Amir penetrate Rabin's guard and assassinate him.