Israel has told the residents of more than twenty locations in southern Lebanon to evacuate immediately. Its forces have been carrying out what it describes as limited, localised raids across the Lebanese border against Hezbollah. We hear from Peter Lerner of the IDF, Lebanese businessman and independent MP Neemat Frem, and Dina Esfandiary of the Crisis Group on how Iran may respond to Nasrallah's killing.

Also in the programme: the BBC's Barbara Plett Usher reports from Sudan, where famine is spreading as the civil war goes on; and a look at water worries in Panama, one of the world's wettest countries.

(IMAGE: Palestinian refugee camp has hit in Lebanon / CREDIT: EPA)