On this week's edition of Correspondents Report: Matt Brown reports from the front line of the Iraqi Army's battle in Mosul as they prepare to retake the west of the city from Islamic State; Samantha Hawley covers this week's Jakarta election for governor, where a high turnout of voters cast their ballot after a bitter campaign; a Papua New Guinea villager returns a long-lost gold ring to the family of a World War II US serviceman; Connie Agius talks to the winner of a NASA competition to find a solution to human waste disposal in space suits; and James Glenday reports on the 'courgette crisis' in the UK that has seen imported lettuce and other greens disappear from supermarket shelves.