Joe Biden pledges military help for Israel but warns nation to 'operate by rules of war'

US president has pledged to give new military assistance to Israel and said the attack by Hamas on Saturday was the 'deadliest day for Jews since the Holocaust'. Speaking at a Jewish community event in Washington DC, Biden reiterated that he backed Israel but also called on Israel prime minister Benjamin Netanyahu to 'operate by the rules of war'. At least 1,100 Israelis have died since Hamas launched a deadly attack on Israel on Saturday, and at least 1,100 Palestinians were killed in Israel's retaliation Israel and Hamas at war – live updates