The fighting with Germany had been ended by the Armistice of 11 November 1918, but throughout 1919 the Russian Civil War continued to rage, with some British (and Allied) intervention on behalf of the Whites. There was a state of undeclared war between Britain and the Bolsheviks, but in November 1919 Lloyd George began a process of coming to terms with the Soviet Union, and negotiations began in Copenhagen between the British and the Soviets. One of the issues was an exchange of prisoners and others wishing to return home, and an Agreement to this end was signed on 12 February 1920.