Northern Ireland already has a prime minister from republicans or nationalists who are against British rule, but have shared power with the unionists who are the second party at the moment, and who are in favor of ties with London.
Both, as the prime minister from the anti-British Sinn Fein , as well as the deputy prime minister from the unionists, pro-connections with London, have the same powers.
But the taking of the main post of the Executive by the political wing of the former Northern Irish Republican Army, the IRA, is a historic event, since it all happens after 103 years, since Northern Ireland, according to some, was separated from Ireland, others say that wanted to continue under British rule.
The new Prime Minister, Michelle O'Neill , does not come from a military background herself and is a social media star.
The Irish Republican Army has been fighting against British rule since 1922 and is against the idea of a separate Ireland and refuses to take seats in the separate Northern Irish parliaments.
Yes, everything changed after the Good Friday Agreement in 1998 under former British Prime Minister Tony Blair.
Today Sinn Fein, the political wing of the IRA, argues that participation in a government with powers delegated from London to Belfast is part of the journey towards reunification with the Republic of Ireland.
The new prime minister of Northern Irish nationalists who seek the reunification of two Irelands, one a member of the EU and the other, part of the United Kingdom abroad, says she will be prime minister of all, in a country where thousands have lost their lives in conflicts of blood in Northern Ireland.
Coming to power for the new Prime Minister may be the easiest part, but living up to the desire and expectations from both sides of the conflict may be an even greater challenge.