This chart shows North Korea's reliance on trade with China

For decades, because North Korea has defied the international community's demand that it give up its nuclear ambitions, it has become the target of escalating sanctions — the latest of which, says Stephan Haggard of the Peterson Institute for International Economics, are "perhaps the most significant ... with respect to any country ever."

Data: The Observatory of Economic Complexity; Chart: Chris Canipe / Axios