And then there were 10

First: Former VP Mike Pence officially announces his candidacy for president at a rally in Iowa, while in Fargo, North Dakota Governor Doug Burgum enters the race. That brings the already crowded field of those seeking the Republican presidential nomination to 10. 

Plus: The Trump campaign releases a provocative new TV spot. 

And: The latest on the dam collapse in Ukraine. 

To learn more about how CNN protects listener privacy, visit cnn.com/privacy