No evidence given. Before entering the EU, each country chooses to agree or not with complying with EU's conditions for membership. Countries wishing to join need to have: stable institutions guaranteeing democracy, the rule of law, human rights and respect for and protection of minorities; a functioning market economy and the capacity to cope with competition and market forces in the EU; the ability to take on and implement effectively the obligations of membership, including adherence to the aims of political, economic and monetary union.
ec.europa.eu/neighbourhood-enlargement/policy/conditions-membership_en,
The demonstrations which began in Kyiv in November 2013 – called "Maidan", or "Euromaidan" – were not EU's punishment to Ukraine, nor were they provoked from outside. They were a result of the Ukrainian people's frustration with former President Yanukovych's last minute U-turn when, after seven years of negotiation, he refused to sign the EU–Ukraine Association Agreement and halted progress towards Ukraine's closer relationship with the EU as a result of Russian pressure. The protesters' demands included constitutional reform, a stronger role for parliament, formation of a government of national unity, an end to corruption, early presidential elections and an end to violence bit.ly/2ftv6iT, .