As the parties involved in talks on the future government of Northern Ireland take part in this week's key summit in Scotland, we take a look at the key issues and players.
The DUP is the only party at the multi-party talks that refused to sign up to the Good Friday Agreement. It has vowed to replace the Agreement with a new deal.
The party is seeking changes to the operation of the power-sharing executive and assembly which will give the DUP a veto on key decisions.
The DUP said the assembly, under its current rules, does not operate fairly, and lacks collective responsibility. It also wants ministers to be more accountable to the assembly.
The party still refuses to speak directly to Sinn Fein (although it attends the Preparation for Government Committee at Stormont with the party).
The DUP leader, Ian Paisley, has said he will speak to Sinn Fein when it signs up to policing, and without Sinn Fein's full commitment to law and order, policing and the courts, there can be no devolution deal.
Ian Paisley said he will speak to Sinn Fein when it signs up to policing
It is vehemently opposed to giving those on the run what amounts to a virtual amnesty.
The DUP said any public or private deal between Sinn Fein and the government on the OTR issue is a deal breaker.
The DUP remains sceptical about IRA intentions, despite giving the IMC report a cautious welcome.
The DUP leader said he is looking for perfection and the DUP is concerned about ongoing involvement in criminality by members of the IRA.
Although the IMC said this was not sanctioned, the Northern Ireland chief constable has that it is a grey area whether the IRA is benefiting from these individual acts of crime such as money laundering.
The DUP, like the other parties, is demanding a financial package for the assembly.
Questions remain about the DUP's willingness to share power with republicans. The party appears to be split on the issue, and signals have been mixed.
The DUP leader held a ground-breaking meeting with the Catholic Primate of All-Ireland this week, a sign of the "not an inch" party moving forward.
But Lord Morrow, an MLA for Fermanagh, recently warned it would be a long time before Sinn Fein was fit for government.
The extremely dominant DUP leader will make the decision on the deal for his party. He will have to weigh whether his party will stomach a compromise with republicans.
The traditionally-hardline party is currently consulting with all sections of unionism about the prospects for power-sharing. The DUP leader has also demanded an election to ratify any deal.