That rural vs urban is too broad. Once the match is lit urbanites will fracture into racial and economic groups as food, energy, meds all run out. Imagine, as Travis has previously mentioned, all EBT cards kaput, SS checks, etc. The have nots will not stay in their enclaves when food and liquor, and dope deliveries dry up. Not many urban preppers to be seen. NYPD, as an example, members mostly live in outer boroughs and suburban areas. Past initial token efforts they will abandon the city to protect their own...and can be expected to “liberate” most arms and equipment. Baltimore, New Orleans, Chicago, Philadelphia and others will have rogue police squads preying on everyone.
A cordon sanitaire for Manhattan Island is dirt simple, See an ethnic cluster map and ome can predicate fairly accurately who can and can not protect their turf. And everybody hates white banksters, lawyers, etc. If smart they take an immediate “vacation”. The left behinds are lunch meat.
Liberal contiguous NJ suburbs will have “shopping visitors” from Patterson, Camden, Newark, etc.
Biggest problem will be vetting escapees as the cities self-immolate. New immigration protocols might be a bit harsh but totally necessary.
What can almost be guaranteed are urban center fluster-cucks before any serious large scale engagement takes place.
POW problem then.