Thats not true, North Korea has a very strong opposing military, that would cause harmful damage to Mexico, however, in the long term, North Korea has no trade alliances or economy large enough to sustain on going battle, including food weapons and technology. Mexico on the other hand has one of the strongest economies in the world, as well as extremely strong ties with Canada, the U.S. and other Western nations, most of whom especially the U.S. would supply Mexico with recources to continue the war.