evidence: But nearly three years ago there was a power-sharing argument between the two governing parties (the DUP - or Democratic Unionist Party - and Sinn Fein), which led to the government at Stormont being dissolved - and it has yet to form again. [...] The DUP and Sinn Fein came out on top as the two largest parties in Northern Ireland, which meant they had to reach an agreement to form a new government. That has yet to happen - almost a year and a half later. The two parties disagree on numerous issues - for example investigations into killings during the Troubles and a law to give official status to the Irish language.