By Dan Williams JERUSALEM (Reuters) -Israel will continue trying to mediate between Russia and Ukraine even if success seems unlikely, Prime Minister Naftali Bennett said on Sunday after returning from surprise talks with Russian President Vladimir Putin. Ukraine has requested that Israel serve as intermediary, citing the government’s good relations with both Kyiv and Moscow. Bennett’s office said he had spoken three times over the weekend with Ukrainian President Volodymyr Zelenskiy. In televised remarks to his cabinet, Bennett gave no details on his three-hour Kremlin meeting with Putin on S…