Leo Varadkar has been officially appointed as Ireland's premier, succeeding Micheal Martin in a planned handover of power under the country's coalition deal which brought Fianna Fail and Fine Gael together for the first time along with the Green Party last year.
Varadkar was confirmed by the President of Ireland Michael D Higgins on Saturday, having received the support of Irish parliamentarians in a special sitting of the Dail.
Varadkar previously served as the country's taoiseach from 2017 to 2020.
Meanwhile, Martin becomes the deputy prime minister, and is expected to be appointed as foreign minister.
Varadkar promises new hope and opportunities for the Irish people after receiving a standing ovation from TDs on the government benches.
Former Prime Minister of Ireland Leo Varadkar has taken over from Micheál Martin as Ireland's premier, following a formal rotation of power agreed under the coalition agreement.
The appointment was confirmed during a special sitting of the Dail on Saturday, where Mr Varadkar was supported by a majority of TDs.
Martin resigned as Taoiseach after the vote, but is now deputy prime minister and is expected to be appointed as foreign minister.
Varadkar, who becomes Taoiseach for a second time, is expected to continue policies such as reducing housing costs, increasing economic opportunity, and seeking cooperation for the country's centrist democrats.
His predecessor, Martin, is viewed as a "cautious steady pair of hands" by The Independent and led the country through the pandemic and supported Ukraine following Russia's invasion.
Sinn Fein's leader, Mary Lou McDonald, criticised the rotation of power and called for a general election.
Meanwhile, opposition politicians in Dublin have argued that there has never been much difference between Fianna Fáil and Fine Gael.