What people are saying on social media after a series of deadly explosions rocked Belgium's capital Tuesday.
Federica Mogherini, the European Union Policy Chief, broke down during an emotional news conference on Tuesday, after the terror attacks in Brussels.
Gen. Barry McCaffrey, retired 4-star army general, and Bill Richardson, former U.S. ambassador to U.N., react to the Brussels attacks and Belgium's government. The next threat could be the United States, says Richardson.
Peter Spiegel, FT Brussels bureau chief, weighs in on the Brussels terror attacks.
Col. Jack Jacobs, U.S. Medal of Honor recipient, discusses the security and intelligence situation in Europe following the Brussels attacks.
NBC News Contributor Chris Dickey reports on the ground in Brussels in the aftermath of the terror attacks.
Art Cashin, director of floor operations at UBS, discusses today's muted market reaction to the Brussels attacks.
Mark Kimmitt, retired U.S. Army Brigadier General, discusses the attacks in Brussels and how intelligence gathering may have precipitated these attacks.
CNBC takes a look at the threat posed by Islamist jihadist groups to countries and regions around the world.
CNBC's Sue Herera reports the latest information on the terror attacks in Brussels, including a news agency close to ISIS reporting the group is claiming responsibility for the Brussels attacks.
Tara Palmeri, Brussels reporter for Politico, reports on the ground of Brussels about the aftermath of the attacks.
CNBC's Sue Herera reports the latest information on the terror attacks in Brussels, including the timeline of today's attacks and current responses from political leaders.
Jerusalem Mayor Nir Barkat speaks about the Brussels attacks and urges global action against terror.
CNBC's Nancy Hulgrave in London reports the latest information on the terror attacks in Brussels, including responses from European leaders in the wake of the attacks.
CNBC's Mary Thompson reports from the Newark Liberty airport in the wake of the Brussels attacks.
Belgian authorities are urging people to use social media rather than making calls.
Gabriele Steinhauser, Brussels reporter for The Wall Street Journal, reports from the Brussels airport about the attacks today.
CNBC's Sue Herera reports the latest information on the terror attacks in Brussels, including Belgian police are searching a residence they believe to be the staging ground of today's attacks.
CNBC's John Harwood reports on Defense Secretary Ash Carter's remarks on Capitol Hill and President Obama's remarks in Cuba about the attacks in Brussels, as well as those from current presidential candidates.
CNBC's Sue Herera reports the latest information on the terror attacks in Brussels, including President Obama speaking in Cuba calling for unity against terrorism in the wake of the attacks.