text:  Hello, I'm Emily Thomas with the BBC News. Russia has launched a wave of airstrikes targeting cities across Ukraine, killing 20 people and injuring more than 50 others. President Zelensky said Russia had used more than 40 missiles in the daytime raids. One of the places hit in the capital, Kiev, is what's said to be Ukraine's largest children's hospital. Vitaly Shevchenko has the details.