When the Davydenko family woke up at night shivering in their winter coats and hats under several layers of duvets, they knew it was time to move. Systematic Russian attacks on Ukraine’s energy grid had left their 12th-floor flat with no electricity for eight days and heating for almost two weeks. Luckily, the family has a cafe near the city centre they could decamp to

• ‘They want to break us’: Russian energy grid strikes give freezing Kyiv some of its darkest days