What We're Following This Morning

Arrests in Belgium: At least six people have been arrested in connection with Tuesday’s attacks that killed more than 30 people. The arrests were made in Brussels’s Schaerbeek area, which was subject to police raids immediately after the attacks.

The Stones follow Obama to Cuba: The band will play in Havana today—the biggest Western act on the Communist Party-run island nation since the revolution in 1959.

March Madness, cont’d: Four teams are already through to the elite eight. They’ll be joined by four more sides in contests today. Tip-off starts this evening at 7:10 p.m. ET.

News from last night here