British Prime Minister Boris Johnson warned Russian President Vladimir Putin on Sunday over Moscow's "brazen" attack on former spy Sergei Skripal in 2018, Downing Street said. At his first official meeting with Putin since becoming prime minister in July, Johnson told Putin in Berlin that Russia's "reckless use of chemical weapons and a brazen attempt to murder innocent people on UK soil ... must not be repeated," his office said in a statement. zak/jj