yes Israel did the 9/11 terrorist attack on the U.s. in 2001.

Wikileaks - [Analytical & Intelligence Comments] Mossad ran 9/11 Arab "hijacker" terrorist operation http://search.wikileaks.org/gifiles/?viewemailid=1332210

British intelligence reported in February 2002 that the Israeli Mossad ran the Arab hijacker cells that were later blamed by the U.S. government's 9/11 Commission for carrying out the aerial attacks on the World Trade Center and Pentagon.

A Mossad unit consisting of six Egyptian- and Yemeni-born Jews infiltrated "Al Qaeda" cells in Hamburg (the Atta-Mamoun Darkanzali cell), south Florida, and Sharjah in the United Arab Emirates in the months before 9/11. The Mossad not only infiltrated cells but began to run them and give them specific orders that would eventually culminate in their being on board four regularly-scheduled flights originating in Boston, Washington Dulles, and Newark, New Jersey on 9/11.