Eugene Tan from Singapore Management University discusses risk of a terrorist attack in Singapore and its level of preparedness for such an event.
Countries should be focused on hunting terrorists who are conducting their pre-operational surveillance, says Stratfor's Scott Stewart.
Travel companies saw their stocks fall as the industry grappled with the attacks in Brussels.
Marc Faber, The Gloom, Boom, & Doom Report, provides perspective to how terror impacts markets and says in the long run the US dollar will be weak.
Democratic presidential candidate Bernie Sanders reacts to the terrorist attack on Brussels.
Mary Kissel, Wall Street Journal, and Ben White, Politco, weigh in on the tragic Brussels terror attacks.
CNBC's Hadley Gamble reports from Brussels where the city is mourning the victims of the terrorist attacks earlier in the day.
J.M. Berger, co-author of "ISIS: The State of Terror," discusses the growing threat of ISIS and how social media plays into it all.
Two Medal of Honor recipients, Colonel Jack Jacobs and Major General Pat Brady, join the "Closing Bell" team to discuss the Brussels terror attacks, as part of a larger group of recipients ready to ring the closing bell at the NYSE.
Talk on airport security and the Brussels terror attack with licensed pilot Anthony Roman, Roman Associates, and Rafi Sela, AR Challenges CEO.
While security has improved in some areas, airport security remains a problem, experts say.
A “new normal” for the European Union?
Robert Liscouski, former assistant secretary with the Department of Homeland Security, and Helima Croft, RBC Capital Markets, weigh in on the Brussels terror attack and President Obama remaining in Cuba.
CNBC's John Harwood reports on statements made by President Obama while he continues his trip in Cuba.
Former U.S. Ambassador to Belgium Tom Korologos discusses the terror attacks in Brussels, and how the city's position as the capital of Europe may attract such activity.
Anthony Chan of Chase talks about his study analyzing the impact of terror attacks on stocks and the economy.
Investors winced after terrorists struck Brussels Tuesday. But an analysis suggests attacks don't have the effect on markets that they used to.
After another devastating terror attack, millions of people are opening up Facebook to check on friends, and Twitter to share grief and support.
CNBC Contributors former Democratic Pennsylvania Governor Ed Rendell and former Republican Texas Senator Kay Bailey Hutchison discuss the attacks in Brussels, and the implications for refugees in the United States.
In the aftermath of the Brussels attacks, Belgium has reintroduced border checks, drawing attention to Europe's open borders.