Plot summary
The U.S. freezes the assets of the Georgian arms deal that they suspect of stealing American weapons and in retaliation he takes Jay hostage while Jay is meeting with a Russian accountant who has information about the arms dealer. Further investigation leads Elizabeth to believe that they suspect the wrong man. She convinces the arms dealer to release Jay, promising that the U.S. will not pursue him any further. A group of Americans track down and assassinate the arms dealer, but the CIA assures Elizabeth that it was not their operation. Eventually, they discover that the leader of an American security company that Elizabeth has worked with several times is the person responsible for the weapons thefts, as well as the murders of the two State Department employees and the weapons dealer, and he is arrested.
Credits
Adapted from Wikipedia contributors, Madam Secretary season 3. HTML formatting and reference markers removed.