European Union leaders on Thursday pushed Ukraine to step up its battle against corruption after the 28-nation bloc agreed to ratify a landmark cooperation deal. The high-profile summit in Kiev comes as Ukraine has taken a series of steps to move closer to the EU in the face of hostility from its giant former Soviet master Moscow. "Corruption is one of the biggest problems of this country," European Commission chief Jean-Claude Juncker said.
"What we are asking is to increase the fight against corruption because corruption is undermining all the efforts of this great nation." Ahead of the summit, EU states on Tuesday said they had formally decided to conclude the ratification of the Association Agreement with Ukraine, effective September 1. The announcement marks the latest chapter in the tortured history of a deal that played a central role in sparking the crisis in Ukraine that has driven a deep wedge between Moscow and the West. In late 2013 Ukraine's then-president Viktor Yanukovych backed out of the association agreement under pressure from Russia, sparking mass pro-EU protests which led to his toppling months later. Moscow in turn annexed Crimea in 2014 and backed pro-Russian rebels in eastern Ukraine where more than 10,000 people have since died in fighting with government forces.