Who is Keith Kellogg and what is he doing in Ukraine?

Keith Kellogg is Donald Trump's Special adviser on Russia and Ukraine who has recently visited Ukraine and met with President Zelensky. His visit comes at a critical time following drone attacks on Odessa that left many residents without power. During his visit, Kellogg stated that they are working to develop a "workable solution" to end the Russia-Ukraine war. This diplomatic engagement occurs amid renewed U.S.-Russia talks that have reportedly sidelined Ukraine, causing frustration among Ukrainian leadership.