KYIV, Ukraine — Ilmi Umerov, a Crimean Tatar political leader, was lying on a hospital bed in Simferopol, the capital of Crimea in his pajamas when Russian secret service agents carted him off to the airport and put him on a plane to Ankara with fellow Crimean Tatar political detainee Ahtem Chigoz. 

The dissidents were freed on Oct. 25, 2017, in exchange for a pair of Russian operatives held in a Turkish jail for their alleged role in the murders of seven Chechen dissidents between 2000 and 2015. The swap was engineered by Turkish president Recep Tayyip Erdogan. “He is such a sultan,” Umerov said of Turkey’s authoritarian leader, whom he met the day after his release. “I mean in a good way.”

Erdogan came together with Ukraine’s president Volodymr Zelensky for three and half hours in Kyiv today offering to mediate once again between its Black Sea neighbor and the Kremlin. Speaking at a joint news conference, Erdogan stressed the importance of diplomacy in defusing the crisis between the two countries. “Rather than pouring oil on the flames, we are acting with the logic of how can we cool tensions,” he said.

The two leaders signed a long-delayed free trade agreement and another to expand production of Turkish-made drones that Ukraine used against Russian-backed forces in the Donbas for the first time last year. The plight of Crimean Tatars, who form “a historical bridge of friendship between our two countries,” had also been raised. “We continue to support the sovereignty and territorial integrity of Ukraine, including Crimea. Common projects involving our ethnic [Crimean Tatar] kin were evaluated in detail,” Erdogan said.