More than a dozen Palestinians, including children, were killed in an Israeli airstrike on a school in Jabalia, in the northern Gaza Strip, that was sheltering displaced people, according to the health ministry in the Hamas-run Palestinian territory.

Holding his teddy bear, Gazan mother Asmaa al-Wasifi mourned her 10-year-old son, who was killed in an Israeli strike before he could take his second polio shot. The United Nations began the second round of its polio campaign in central areas of the enclave on Monday,

The Israeli Defense Forces said the attack targeted dozens of Hamas and Islamic Jihad militants who had gathered at the site in northern Gaza.