Ukraine and the Customs Union member states have to agree on the procedure for applying sanctions within the agreement on a free trade area within the CIS if Ukraine signs a free trade area agreement with the EU in Vilnius in November 2013, government commissioner for European Integration Valeriy Piatnytsky has said.

He said so at a press conference in Kyiv on Monday, when asked how the Customs Union member states could implement addendum 6 to the agreement on a free trade area within the CIS, which envisages the imposition of sanctions on the member states that introduce free trade with third countries or unions, thus changing the structure of their import.

"One can make a lot of assumptions here, and that's why I would like to be honest and say that I don't know in what legal context the regulations of addendum 6 are applied, and it is obvious that the countries have to sit down and agree on the use of addendum 6 to the agreement on a free trade area within the CIS. But if an exclusively political decision will stand behind it, then we don't need any procedures and regulations," Piatnytsky said.

He also said that the WTO regulations contain clear procedures for settlement of issues and procedures for the introduction of protective measures.

"As for the Customs Union, there is too much uncertainty there, as the Customs Union does not exist today as an international entity," he said.