Israel at war, day 300: Israel calls on citizens to exercise caution abroad

PM Netanyahu says Israel is prepared for any scenario, is set to speak with U.S. President Biden ■ Western diplomats warn that risk of war has grown following assassinations in Beirut and Tehran ■ Hezbollah chief Nasrallah: 'We have entered a new phase in all arenas' ■ Israel confirms that Hamas' military chief Mohammed Deif was killed in IDF strike in Khan Yunis in July ■ Here's what you need to know 300 days into the war