LONDON (Reuters) – Britain on Wednesday announced 46 new sanctions against individuals and groups from different countries it said were involved in Russia’s military supply chains and helping sustain its invasion of Ukraine. Those sanctioned included entities operating in China, Turkey, Serbia and Uzbekistan, Britain’s foreign ministry said. Britain has staunchly supported Ukraine since Russia invaded in February 2022, and said it was targeting third-country suppliers in order to limit Russia’s ability to try to work around existing sanctions. “We will continue to ratchet up pressure on Putin …