A top European Union official said he is confident Russia would continue to supply gas to western companies despite the country's current gas row with Ukraine.
The EU Energy Commissioner Guenther Oettinger urged Russia and Ukraine to try to find a compromise following the latest round of negotiations that ended without a deal.
Gazprom said it reduced supplies to Ukraine following the failed talks.
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Here's everything we know so far about the Manchester Arena explosion.
The hashtag #RoomForManchester was being widely shared.
Witnesses reported hearing a "huge bang" at the venue during the concert on Monday evening.