Kim Jong Un took a bulletproof train to visit Vladimir Putin in Russia this week. Jenny Town at the Stimson Center explains how the two leaders have little to lose and much to gain from each other.

This episode was produced by Avishay Artsy with help from Hady Mawajdeh, edited by Amina Al-Sadi, fact-checked by Laura Bullard, engineered by David Herman, and hosted by Sean Rameswaram.

Transcript at vox.com/todayexplained

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