Kim Jong Un

Updated at 6:50 p.m. ET

"Military solutions are now fully in place, locked and loaded, should North Korea act unwisely," President Trump said on Friday, in his latest salvo in the exchange of rhetoric with the isolated regime.

Trump added, "Hopefully Kim Jong Un will find another path!"

Updated at 1 p.m. ET

As the leaders of two nuclear-armed countries trade threats, U.S. Secretary of State Rex Tillerson says President Trump "is sending a strong message to North Korea in language that Kim Jong Un would understand, because he doesn't seem to understand diplomatic language."

What makes North Korea feel so oppressive? If you ask its highest-ranking defector in decades, the answer is censorship. Thae Yong Ho, who was until last summer a Pyongyang envoy in London, argues that increasing the flow of information into the North is what can sow the seeds of popular discord to bring down the Kim Jong Un regime.