Trump dismisses Iran's latest negotiating position

President Donald Trump has dismissed Iran's response to US proposals to end the war as "totally unacceptable". Iran's semi-official news agency, Tasnim, said Tehran's proposal included an immediate end to the war on all fronts and a halt to the US naval blockade of Iranian ports and guarantees of no further attacks on Iran. We speak to a former Australian prime minister, Malcolm Turnbull, about the conflict and what role China could play in ending it.Also in the programme: we report on the origins of the Hantavirus; a relative of Syria's Bashar al-Asad is on trial in Damascus for...