The situation in Ukraine and Russia... in 100 words

Dan JohnsonUkraine correspondent, reporting from Kyiv Ukraine’s air raid alert app usually warns of incoming Russian drones or missiles. Last night it issued alerts of a radiological threat, a chemical attack and street fighting here in Kyiv. The warnings were followed by all clear messages just over an hour later. The air force issued a statement saying the app had been hacked and reassured citizens there was no imminent threat of nuclear war, blaming Russian interference. Hours later, Russia’s