U.S. and Belgian intelligence sources told NBC News Wednesday they are certain Najim Laachraoui died at the airport during the blasts Tuesday.

Belgian police searching for a suspect in the Brussels airport attack have seized a nail-packed bomb, chemicals and an ISIS flag in raids.

He is America’s most wanted — the number one name on the government’s kill list of ISIS leaders, say senior U.S. military and intelligence officials.

Syed Farook discussed staging a terrorist attack in the Los Angeles area with a neighbor as early as 2012 — but got cold feet, investigators said Wednesday.

Syed Farook and Tashfeen Malik practiced at a local gun range and made financial plans for their family after their deaths, NBC News learned.

The NSA will probably spy on foreign leaders during the UN General Assembly in New York this week, former intelligence analysts told NBC News.

China’s cyber spies have accessed the private emails of “many” top Obama administration officials.

The map uses red dots to mark more than 600 corporate, private or government “Victims of Chinese Cyber Espionage” that were attacked over a five-year period.

Al Qaeda confirmed Tuesday that it’s No. 2 official — a former aide to Osama Bin Laden — was killed in a U.S. airstrike.

The solider and his cousin were charged with plotting to fight for ISIS in the Middle East, the latest case of an American offering to assist the terror group.