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I'm Helena Merriman and in a new BBC series,
I'm talking to the reporters who first covered this story.
What did they miss the first time?
The History Bureau, Putin and the apartment bombs.
Listen on bbc.com or wherever you get your podcasts.
Hello and welcome to NewsHour live from the BBC World Service in London.
I'm Rebecca Kesby and we begin the programme in Ukraine where it's currently minus 10 degrees C in Kyiv and Russia has turned that bitter cold into its latest weapon.
Despite the round-the-clock efforts of engineers, electricians and technical teams,
around 20% of the capital's buildings are without power after sustained Russian attacks on civilian infrastructure.
Strikes on Ukraine have killed at least one person and injured dozens.
This sound is from footage released by the Russian military authorities of rocket fire on Ukrainian targets.
It's not been independently verified.
Orkiv's mayor Vitaly Klitschko has urged people to leave the city
if they have somewhere else to go while this freezing weather lasts.
The latest strikes come just as the trilateral talks between the U.S.,
Ukraine and Russia continue into their second day in Abu Dhabi.
Ukraine's foreign minister said the brutal attacks hit not just our people,
but the negotiating table.
More on those talks in a moment.