The BBC announced on Wednesday that it had turned to an old-fashioned form of radio broadcasting to keep Ukrainians informed about the war. The broadcasting company said it had launched two new shortwave frequencies, which can be heard on cheap, portable devices, that can be received clearly in the Ukrainian capital of Kyiv and parts of Russia. The BBC said it will broadcast four hours of World Service news in English a day on the shortwave frequencies, a move that recalls an era in Europe when the British broadcaster was one of the few sources of independent news in Eastern Europe during World War II and the Cold War.