SummaryRussian drone kills nine civilians in Ukraine Zelenskiy calls for more sanctions on Russia Drone attack comes hours after peace talks in Istanbul Kremlin says 'agreements' needed before Putin, Zelenskiy meet Macron accuses Putin of 'cynicism' KYIV, May 17 (Reuters) - Ukrainian President Volodymyr Zelenskiy called on Saturday for stronger sanctions on Moscow after a Russian drone killed nine bus passengers in northeastern Ukraine just hours after the two countries held their first peace talks in three years of war.The meeting of Russian and Ukrainian officials in Turkey on Friday failed to broker a temporary ceasefire. It was the first...