Just how damning are allegations by Congressman Curt Weldon that a secret Pentagon intelligence operation pegged hijacker Mohammed Atta as a threat nearly two years before he led the 9/11 attacks?

PRAGUE Mohamed Atta, the leader of the September 11 hijackers, visited Prague twice in the fifteen months before the terrorist attacks on the World Trade Center and Pentagon, in June 2000 and April ...

UNITED NATIONS -- Despite U.S. denials, the Czech government stands by its account that a suspected Iraqi intelligence agent met Sept. 11 hijacker Mohammed Atta in Prague last year, a senior Czech ...

PARIS -- European investigators say they increasingly believe that the Sept. 11 hijackers and their support network in Europe made up a carefully chosen and tightly ...

In this series, Newsweek maps the road to 9/11 as it happened 20 years ago, day by day. German citizen Said Bahaji purchased an airline ticket on August 20, to leave Hamburg for Karachi, Pakistan via ...

The Sept. 11 commission will investigate a claim that U.S. defense intelligence officials identified ringleader Mohamed Atta and three other hijackers as a likely part of an al Qaeda cell more than a ...

The proximate cause of the 9/11 catastrophe was the failure of U.S. border security. Specifically, the terrorist attackers succeeded in their suicide mission because U.S. government agencies failed to ...

The Arizona debate was complete. There I was, checking some Tweets and taking a last look at Facebook before I went to bed. But before I closed my notebook, I noticed an oddly familiar face staring ...

That question has recently been buzzing around Washington, but now the chairman of the defunct 9/11 commission has lashed out at the Bush Administration for failing to address publicly claims that the ...