Sunday's episode had Bob utilize his contact Anya (played by Scott Foley's real-life wife) from the Russian consulate in Los Angeles to find why Russian Spetsnaz agents (more likely Vympel than Alfa) had recently been eliminating Leon Drake's domestic terrorists on American soil.
Meanwhile, Sam and Drake used their abduction of Molly to keep the Unit from attacking their second warehouse. Jonas then went after Sam and Molly, Bob survived an ambush at Anya's hotel room and Mack ended up cleverly eliminating the warehouse terrorists anyway.
Bridgette then helped Jonas find Molly and flushed out Drake, after which Sam helped Jonas and Molly escape; Bob saved Anya from a Spetsnaz attack outside the opera house and took her in for political asylum in exchange for vital info on ex-KGB agent Armen Kochenko who's apparently running the conspiracy; Kim and Tiffy called the police to report Molly missing.
The info obtained by Bob revealed that the terrorist cell obtained enough uranium for several nuclear bombs and evidence of planned attacks.
An angry Jonas then confronted Colonel Ryan about Ryan's part in Molly having been put in harm's way and Sam's infiltration of Leon Drake's terrorist cell. Ryan defended his actions on grounds of national security, but Jonas vowed that Ryan had pretty much lost the Unit. Molly then asked Jonas to leave the Unit immediately - when he didn't, she left him.
Next week: In the season finale, the Unit tries to stop a nuclear bomb from reaching Washington, D.C., Gray gets married to Joss, Molly supposedly leaves Jonas and Colonel Ryan contemplates whether he's still fit to command the Unit.
-G