Deputy Minister for the Temporarily Occupied Territories of Ukraine, Yuriy Hrymchak, has said hope remains that the Normandy Four summit will be held June 6, 2019.

He also recalled the statement of President of Ukraine, Petro Poroshenko, who claimed that Russia lost $150-170 billion over international sanctions imposed as a result of Moscow's failure to comply with the Minsk Agreements on Donbas settlement, according to Obozrevatel.

Hrymchak noted a new package of restrictions was being prepared, targeting Russia, which will be boosted if the Kremlin refuses to allow UN "blue helmets'" deployment in the Ukrainian Donbas.

Read alsoPoroshenko: Putin may be invited to Normandy Four to decide on withdrawal of troops from Donbas

If Russia does agree to the deployment of UN peacekeepers throughout the entire territory of Donetsk and Luhansk regions (including those occupied by Russian proxy forces), the policing mission will need from three to six months before the military peacekeeping contingent enter, according to the ministry's calculations.

During this initial period, international interim administration will be formed while the aggressor state will have three months to withdraw its forces from Ukraine, according to Hrymchak.