English to Arabic Social Sciences Government / Politics

"He was nominated by Sinn Féin President, Gerry Adams, to be Deputy First Minister from May 2007, when devolution was restored and now serves alongside the First Minister"

This is specific to the context of Northern Ireland...I was thinking of using استعادة السيادة ... any ideas?

thanks,
Khalid

http://en.wikipedia.org/wiki/Devolution#Northern_Ireland
"Devolution is the statutory granting of powers from the central government of a state to government at national, regional, or local level. It differs from federalism in that the powers devolved may be temporary and ultimately reside in central government, thus the state remains, de jure, unitary."