Geordi: Maybe we can call the Klingon chancellor for help.
Worf: The Klingon chancellor and I are not on very good terms.
Geordi: I thought you and Martok were blood brothers or something.
Riker: Martok's not chancellor anymore. You didn't know did you? Long story, but Alexander's the chancellor.
Geordi:
At first, I wondered why not ask the Klingons for help. Their ships would not be controlled by the Borg and they could presumably send a 100+ ships that could help. The only downside is that Picard and co probably don't want to the Klingons destroying Starfleet as that would leave the Federation wide open to invasion. So Picard and co have to find a solution that does not destroy Starfleet.