The document was signed by President of Ukraine Petro Poroshenko, European Council President Herman Van Rompuy, European Commission President Jose Manuel Barroso, and the heads of state and government of the 28 EU member states.

On behalf of Ukraine, the ceremony was also attended by Minister for Foreign Affairs Pavlo Klimkin, First Assistant of the President Yuriy Onishchenko, Deputy Head of the Presidential Administration Valeriy Chaly and Representative of Ukraine to the EU Kostyantyn Yeliseyev.

Petro Poroshenko called the signature of the Association Agreement with the EU as one of the most important days in the history of Ukraine. "It is one of the most important days since independence of Ukraine. We must use this opportunity to modernize the country but we need only one thing – peace and security," the President told journalists before the ceremony.

"We hope that today, the EU will demonstrate the same solidarity as before," the Head of State noted.

The political chapter of the EU-Ukraine Association Agreement was signed on March 21, 2014.

The Association Agreement is designed to provide a new, in-depth format of relations between Ukraine and the EU. The document will not only lay down a qualitatively new legal framework for future relations between Ukraine and the EU, but also serve as a strategic guide for systemic social and economic reforms in Ukraine and a large-scale adaptation of Ukraine's legislation to EU standards and rules.