Europe will stand with Ukraine "for as long as it takes", EU Commission chief Ursula von der Leyen told the World Economic Forum in Davos on Tuesday as Western delegates discussed the need to bolster support for Kyiv in its fight against Russia's invading forces. Earlier, the head of the United Nations nuclear watchdog said during a visit to Ukraine that he hoped to make progress on a safe zone deal around the Russian-controlled Zaporizhzhia plant, though stressing that negotiations were tough. Follow our blog to see how the day's events unfolded. All times are Paris time (GMT+1).
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