New Zealand Defence Force personnel will now remain in Iraq until June next year, although the number of troops will fall slightly from 143 to 121.

"ISIS remains a threat," she says.

New Zealand has 143 troops training Iraqi soldiers at Camp Taji. Ms Ardern is pulling out 22 of them in November, but keeping the rest there longer - an extra seven months.

The troops were initially deployed in May 2015. It was meant to go until May 2017, but was extended by Mr Key to November 2018. Now, it has crept out under Labour to June 2019.