Four people, including a child, were killed in Russian attacks on the Ukrainian capital, Kyiv, and the surrounding region, local officials said on Saturday, as Ukraine hit another oil refinery in Russia. Residents endure regular drone and missile barrages that Kyiv’s depleted air defences are struggling to counter amid Moscow’s four-year-old full-scale invasion, while repeated Ukrainian strikes on oil facilities have caused fuel shortages and rattled Russians. Two grandparents and their...