Watch Madam Secretary Online: Season 4 Episode 21

A terrorist threatened to destroy a flood, and it all got too real for Elizabeth on Madam Secretary Season 4 Episode 21.
With the fate of millions up in the air, she had to turn to a neighboring country with the aim of saving everyone involved.
Meanwhile, things took a turn when the government decided to change the game.
Also, Stevie was tasked with finding Russell and activity that could help manage his stress.
Use the video above to watch Madam Secretary online right here via TV Fanatic.
Get caught up with all the latest drama right now.
Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.