evidence: As of an agreement in 2017, around 85 percent of the Kyrgyz-Uzbek border was formally described and agreed to. But the remaining border remained undetermined, particularly when it came to the status of the Orto-Tokoi (Kasan-Sai) reservoir and Ungar-Too, a mountain that has served as a flashpoint as recently as 2016. Deescalating tensions over Ungar-Too was, in fact, one of Shavkat Mirziyoyev’s first actions as acting president in September 2016 after the death of Islam Karimov. He ordered the release of four Kyrgyz workers who had been detained by Uzbek troops and then the withdrawal of Uzbek forces.