activity there for the first time in several weeks. the officials say there appear to be modifications around a key tunnel entrance to an underground test area. >> it would look like they're preparing for another nuclear test. the tempo has increased the last couple of years. >> reporter: u.s. officials say military options for north korea have been updated and will be presented to president trump if kim's regime conducts another nuclear test, but it is not clear if the u.s. would respond militarily. tonight the secretary of state is blasting kim for acting like a mafia don to pay for his weapons. >> whether it is money laundering or malicious cyber activity, north korea has engaged in a number of criminal enterprises that help fund its weapons programs. >> north korean diplomats around the world have engaged in ava right of frankly illegal behavior under the protection of diplomatic cover, everything from drug trade, methamphetamines, to passing