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
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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