Jacinda Ardern says she's effectively run out of energy to be New Zealand's Prime Minister, in a surprise announcement that she's resigning.
The country was stunned by a surprise announcement from an emotional Ardern overnight.
Fighting back tears, Jacinda Ardern says she doesn't have 'enough in the tanks' to carry on in the job.
Her last day as the country's leader will be no later than the 7th of February.
She had been expected to lead her Labour party into elections later this year.
Addressing her country overnight, Ms Ardern, said "With such a privileged role comes responsibility. The responsibility to know when you are the right person to lead, and also when you are not.
"This summer, I had hoped to find a way to prepare, not just for another year, but another term, because that is what this year requires. I have not been able to do that.
"I know what this job takes and I know that I no longer have enough in the tank to do it justice".
She was the world's youngest female head of government when she took the job aged 37 in 2017.
Ms Arden became just the second elected world leader ever to give birth in office when she had her daughter in 2018.