The UN says it's hopeful it could get fertiliser out of the Strait of Hormuz within seven days if it secures cooperation from Iran and the United States. About one third of global fertiliser trade passes through the Strait - but with shipping at standstill, the UN is warning that 45 million people could be forced into food insecurity. GUEST: Jorge Moreira da Silva, Under-Secretary-General of the United Nations and Executive Director of the UN Office for Project Services (UNOPS) PRODUCER: Pip Cook