Beirut schools were closed Monday after six people — including the media relations chief for Iran-backed Hezbollah in Lebanon — were killed in airstrikes in the central part of the city a day earlier. The strikes prompted the education ministry to shut schools and higher education institutions in the Beirut area for two days.

In some areas of London and other big cities there are fewer children than there have been in the past. Newsround finds out why.

Schools in Beirut were closed on Monday after Israeli strikes on the Lebanese capital killed six people including Hezbollah's spokesman, the latest in a string of top militant targets slain in the war.