Carwyn Jones told AMs on the Scrutiny of the First Minister Committee that there will inevitably be times when the UK and Welsh Governments disagree about how much power Welsh ministers have. But he said he hoped those occasions would be 'infrequent.'
He was asked by Liberal Democrat AM Eluned Parrott about a recent decision by the UK Attorney General to refer the Welsh Government's first bill to the Supreme Court.
More top news
A generally dry night with clear spells in the north. Showers will push in to the south by the early hours!
Finley Thomas was a "lovely, happy beautiful baby" and changed in the months leading up to his death, a court has heard.
There will be more Welsh athletes than ever before, at this year's World Powerlifting Championships in Texas in June.