Hassan Nasrallah: 'Hezbollah is obligated to respond'

The leader of Hezbollah, Hassan Nasrallah, has pledged a "strong and effective" response to the killing of its military commander by Israel and said it would act either alone, or with its regional allies.

It comes as Hamas has named Yahya Sinwar - the rumoured mastermind of the October 7th attacks in Israel - as its new leader.