"It is necessary to compliment the implementation of the 'military' measures under the Minsk agreements with the work on 'economic and political' aspects of the deal," Zakharchenko said in a statement.
The DPR leader added that the work on political settlement should start immediately.
The Minsk peace deal hammered out by leaders of Russia, France, Germany and Ukraine on February 12, stipulates that constitutional reform in Ukraine should be introduced by the end of 2015 as the country's new constitution comes into force.
The decentralization of power will become a key element of political settlement, alongside the introduction of permanent legislation granting a special status to certain areas of Donetsk and Luhansk regions by the end of 2015.
