16:06BBC OS2022/03/22 16:06 GMT: Ukraine: President Zelensky says country 'on the brink of surviving'BBC World Service Duration: 50 minutes Tue 22nd Mar 2022, 16:06 on BBC World Service OnlineWe continue our ongoing coverage of the Russian invasion of Ukraine. Show more GenresNewsFormatsDiscussion & TalkBrandBBC OS Source: BBC Online