Donald Trump may talk tough on North Korea, but in reality he doesn't want military action because of the prohibitive cost.
That's the view of North Korea expert John Nilsson-Wright, who spoke to talkRADIO about Mr Trump's promise to take action to stop North Korea's nuclear programme if China won't help.
Nilsson-Wright told Julia Hartley-Brewer that Mr Trump "wants the Chinese to do more" but won't really want to go to war as "the costs would be catastrophic."
Instead of military action, the academic suggested the US might consider economic sanctions to raise the pressure on Pyongyang.
He said: “One of the things that Americans are thinking about is possibly introducing secondary sanctions. If you really want to put pressure on the North Koreans you’ve really got to get the third parties, that includes Chinese banks."
Listen to the full interview above