A top Kremlin official this week ruled out using nuclear force over the conflict in Ukraine. “No one is thinking about using—about even the idea of using a nuclear weapon,” Russian President Vladimir Putin’s spokesman Dmitry Peskov told PBS on Monday evening. Last week, Peskov suggested in an interview with CNN that Russia would consider using nuclear weapons if faced an “existential threat.” And former Russian President Dmitry Medvedev said earlier this week that Russia “reserves the right to use nuclear weapons if it faces an existential threat, even if the other side has not employed nuclear weapons.” “Any outcome of the operation, of course, is not a reason for usage of a nuclear weapon,” Peskov also told PBS on Monday. “We have a security concept that very clearly states that only when there is a threat for existence of the state in our country, we can use and we will actually …