What would it take for Putin to stop fighting in Ukraine?

President Trump says a Ukraine peace deal is ‘closer than ever’ following talks in Berlin with European officials and a delegation from Ukraine. But is it? As the fourth anniversary of Russia's full scale invasion approaches, no peace deal can be agreed without Vladimir Putin’s support. Can he be persuaded to accept anything short of a Russian victory? We speak to the BBC’s Russia editor, Steve Rosenberg.Producer: Valerio Esposito, Viv Jones and Xandra EllinExecutive producer: James ShieldSound engineer: Travis EvansSenior news editor: China CollinsPhoto: Russian President Vladimir Putin. Credit: Gavriil Grigorov/Sputnik/Reuters)