LONDON (Reuters) – British Prime Minister Boris Johnson told leaders of countries including the United States, France and Germany in a call to continue supplying weapons to Ukraine after the former Soviet republic was invaded by Russia, a government spokesperson said. Johnson was joined on the call with other world leaders and representatives of the European Union and NATO. “The prime minister stressed the need for countries to continue supporting the Ukrainian government, including with the provision of defensive weapons,” the government spokesperson said. “The prime minister welcomed the uni…