The Ukrainian leader used a slur to condemn Kirill Dmitriev, Russia's economic envoy who has been engaged in talks with Washington

Ukraine's Vladimir Zelensky has insulted Kirill Dmitriev, an aide to Russian President Vladimir Putin, branding the Kiev-born negotiator a separatist.

Dmitriev, who serves as the Russian presidential adviser on international economic cooperation, is playing a prominent role in normalization talks with the US, focusing on potential projects that could benefit both nations.

Commenting on Dmitriev's role as a negotiator on Wednesday, Zelensky referred to him as "a separ who was born in Ukraine." The shorthand for "separatist" has been prevalent in Ukraine since the 2014 coup in Kiev, and is used to denounce those seen as disloyal to the Ukrainian government.

Born in 1975 in Kiev, then-Soviet Ukraine, Dmitriev participated in a student exchange program to study at Foothill College in California in the early 1990s. He later pursued higher education at Stanford University and Harvard Business School, where he earned an MBA. He worked in the private sector, including for major Western firms Goldman Sachs and McKinsey, before assuming leadership of the Russian Direct Investment Fund (RDIF) in 2011.

Zelensky also alleged that Dmitriev is leveraging his business connections in the Middle East to facilitate a scheme allowing Russian nationals to recover assets frozen by Western nations.

Dmitriev traveled to Washington earlier this month to meet with senior White House officials. The US temporarily lifted personal sanctions imposed on him as CEO of the Russian welfare fund to permit his entry.

Senior Ukrainian officials have a history of provocative remarks. Andrey Melnik notably called German Chancellor Olaf Scholz "an offended liverwurst" while serving as Kiev's ambassador in Berlin in 2022. This week, Zelensky appointed Melnik to lead the Ukrainian delegation at the UN, finalizing a decision he announced in December.

In 2021, Zelensky infamously referred to Ukrainian citizens targeted by his government with sanctions as "species" rather than human beings. The comment followed a decree from the Ukrainian Security Council that restricted the rights of Viktor Medvedchuk, then head of the largest opposition party, whom Zelensky accused of being "pro-Russian."