North Korea warns it will go after the White House , Congress and ` ` whole U.S. mainland '' It insists it was not involved in the Sony hack . President Obama says the attack was ` ` cybervandalism , '' not terrorism . But he says the U.S. will review whether to put North Korea back on list of terrorism suspects .
North Korea warns it will go after the White House , Pentagon and `` whole U.S. mainland '' It insists it was not involved in the Sony hack . President Obama says the attack was `` cybervandalism , '' not war . But he says the U.S. will review whether to put North Korea back on list of terrorism sponsors .