taiwan which china views as a renegade province. beijing is furious. >> translator: the u.s. arms sale to taiwan has seriously violated international law and basic principles of international relations. >> reporter: with diplomacy uncertain, u.s. military options for north korea have recently been updated. >> threat is much more media now. the president has directed us to prepare a range of options, including a military option, which nobody wants to take. >> reporter: but a u.s. military strike could trigger catastrophe. >> i think that if the u.s. chose to strike north korea in any way, we would most likely see an immediate north korean response. that could take different forms it could be a counterattack on south korea. it could be another cyber attack. and kim jong-un would likely react in that way. >> and it could have a massive