Call it the news of the year, perhaps even of the decade. For the first time since the Korean Peninsula was divided in 1948, leaders of the two warring nations met in what had the look and feel of a jovial reconciliation between two estranged family members. Kim Jong-un of North Korea and President Moon Kae-in of South Korea made a number of important, though tentative, breakthroughs, including an agreement to denuclearize the peninsula and a pledge to revisit several infrastructure projects that would help bring some economic unity to the two Koreas.

Which the North desperately needs, as anyone reading this knows.

Below is economic development, as measured in gross national income (GNI) per capita, for the two nations since division. The chart looks not unlike the one I shared comparing Cuba and Singapore since their founding in 1959.

Thanks to rapid growth spurred early on by business-friendly policies, South Korea is today the fourth largest economy in Asia—following China, Japan and India—and the 11th largest in the world. Most of its citizens enjoy a comfortable, middle-income lifestyle and can afford to own many of the popular consumer goods and vehicles manufactured by Samsung, LG, Hyundai and other Korean household name brands.

North Korea, on the other hand, has not advanced in any material way and today has an economy roughly 30 times smaller than its southern neighbor. Its inhabitants routinely suffer great hardship, from famines to a lack of adequate health care.

For now, many analysts are skeptical that this new development will have a huge impact on the surrounding Asian region—in the near term, at least—since North Korea's economy is small and lacks the infrastructure necessary for rapid expansion. It's unlikely we'll see the sort of boom Vietnam experienced after opening its economy up to foreign direct investment (FDI) in the late 1980s. It's just as unlikely we'll see unification anytime soon, as that would require the presiding Kim to end the dynasty that began with his grandfather Il-sung.