The DUP leader was speaking after meeting with Northern Ireland Secretary Hilary Benn in Belfast on Thursday.
Last month, the UK and Irish governments unveiled a joint package of measures aimed at breaking a long impasse over how best to approach outstanding issues from the conflict.
The framework will result in a major overhaul of policies unilaterally introduced by the last UK Conservative government in its contentious Legacy Act.
It will see the removal of the Legacy Act’s bar on legacy-related civil cases in UK courts and allow the resumption of inquests that were halted by the Act.
There will also be a significant restructuring of the existing Independent Commission for Reconciliation and Information Recovery (ICRIR) – a body empowered to investigate Troubles killings.
A separate