Terrorists attacked Brussels during Tuesday morning rush hour, killing at least 30 people and injuring more than 200. A suicide bomber hit the international airport, and another explosion hit a train at the metro station. "What we feared has happened," said the Belgium prime minister. Belgium has issued a level 4 alert and locked down the entire city. The attacks comes on the heels of last week's arrest of a central suspect in the Paris bombings by Belgian and French police.
Brussels Rocked by Terrorist Attacks
Jones Hayden, Bloomberg Bureau Chief in Brussels
Colin Clarke, associate political scientist with the Rand corporation
Spencer Ackerman, U.S. national security editor for The Guardian