Russian strikes on Ukraine’s capital killed at least four people and wounded more than a dozen others, local officials said on Saturday, after Kyiv’s mayor warned of a ballistic missile attack. It comes after the United Nations found June was the deadliest month for civilians in Ukraine since April 2022. Russia has stepped up long-range strikes on the capital in recent months, while Ukraine is chronically short of air defences capable of downing ballistic missiles, which travel at several...