Representatives of the Ukrainian opposition forces have asked the European Parliament to extend the monitoring mission of politicians Pat Cox and Aleksander Kwasniewski in Ukraine. The chairman of the political council of the Batkivschyna Party, Arseniy Yatseniuk, said this in Vilnius on Thursday, reports Ukrinform. "We ask the European Parliament and European partners to extend the Cox-Kwasniewski mission in Ukraine," Yatseniuk said. He also expressed hope that Ukraine would "sooner or later" sign an Association Agreement with the EU. "This is why we are persuading our EU partners to leave the door open," he said. Former European Parliament President Pat Cox, in turn, said that Ukraine's decision to suspend preparations for the signing of an association agreement with the EU is a decision of a sovereign state. "I hope it's not the end of the story. I have no doubt that the European Union will leave the door open for Ukraine and that the highest-level dialogue will continue," he said.