The association agreement was initiated in 2012, but the Ukrainian government suspended preparations for signing the association agreement on 21 November 2013, during the presidency of pro-Russian Viktor Yanukovych, who attended the EU summit in Vilnius on 28–29 November 2013 where the association agreement was originally planned to be signed but it was not. The decision to put off signing the association agreement led to the pro-EU Euromaidan movement.Ukraine police dismantle Kiev protest camps, BBC News (9 December 2013)</ref> These led to the removal of Yanukovych and his government by parliament after the 2014 Ukrainian revolution in February 2014. Since then, Ukraine has been striving towards integration and accession to the European Union, which is enshrined in the Constitution of Ukraine of February 21, 2019.