Block the freeways in and out of Seattle and starve em until they eat each other.
Being close, I'm surprised you're unaware of the major seaport, ferries, in-town heavy airport (Boeing Field), and rail service in and out of the city.
112 posted on 07/31/2020 7:59:45 PM PDT by steve86
(Prophecies of Maelmhaedhoc O'Morgair (Latin form: Malachy))