Jacinda Ardern resigns as prime minister of New Zealand

Labour leader will stand down no later than 7 February, saying she no longer had enough in the tank' to do the job

New Zealand prime minister Jacinda Ardern has said she is resigning, in a shock announcement that came as she confirmed a national election for October this year.

At the party's annual caucus meeting on Thursday, Ardern said she no longer had enough in the tank" to do the job. It's time," she said.