North Korea's rapidly advancing nuclear capability is not the fault of President Donald Trump, but rather of successive U.S. administrations who've failed to reign in the rogue state, according to a former White House foreign policy director.
"Clinton, Bush, Obama, and Trump: this is a 20-year failure of American foreign policy," James Rubin, former assistant secretary of state for public affairs under the Bill Clinton administration, told CNBC Friday.
Rubin tempered his criticism, however, stressing it was important to remember that "there are limits to what you can do in a country like that if you aren't prepared to go to war."
The comments come on the tail of the first government-level talks between North and South Korea in more than two years, as both countries prepare for the Winter Olympics in South Korea. North Korea has been a constant presence in international headlines, developing nuclear weapons and testing missiles at a faster rate than at any point in its history.