Plot summary
A radicalized Muslim blows himself up in an Illinois coffee shop, killing multiple other people as well. Elizabeth learns that the person who funded the suicide bomber's training is highly placed in the Saudi government. She attempts to pressure the Saudi ambassador to take action but fails. The media learn that her speechwriter, Matt, had donated money to the mosque that the suicide bomber attended in Illinois, and Conrad's opponents for president capitalize on that to anger their voter bases. Russell tries to force Matt to make a public statement. Matt and Jay are attacked in a bar. At a summit, Elizabeth ambushes the representative from Saudi Arabia with the mother of a young girl killed in the attack, and the publicity convinces the Saudi government to arrest the culprit. Dmitri and his sister are reunited.
Credits
Adapted from Wikipedia contributors, Madam Secretary season 3. HTML formatting and reference markers removed.