and fires flare across russia as a heat wave tears through over 1.5 million hectares of land. in siberia. welcome to tokyo, where for the next three weeks bbc world news will be broadcasting from this stunning location above tokyo bay to bring you the latest on the most contorversial olympic games for a generation. a games delayed a year and now proceeding in a global pandemic. and with just four days to go until they get under way, the olympic village has been hit by a fourth coronavirus case.