The New Nuke (It'll be around forever, eh eh eh)

[Roomba]

I agree it'd probably be best to sidestep the issue by making the nuke indestructible, although I don't think disarming the nuke really needs to be all that fancy a process. Just hit the nuke with wirecutters and have a 'disarming' process that takes about 10-15 seconds to do - long enough that it'd be hard to pull off unless the crew has secured the nuke themselves. Also yes, I think the round should end when any victory condition is achieved.