The European UnionUkraine Association Agreement is a European Union Association Agreement between the European Union (EU), the European Atomic Energy Community (Euratom), Ukraine and the EU's 28 member states at the time (which are separate parties in addition to the EU and Euratom). It establishes a political and economic association between the parties. The agreement entered into force on 1 September 2017; previously parts had been provisionally applied. The parties committed to co-operate and converge economic policy, legislation, as well as regulation across a broad range of areas, including equal rights for workers, steps towards visa-free movement of people, the exchange of information and staff in the area of justice, the modernisation of Ukraine's energy infrastructure and access to the European Investment Bank (EIB). The parties committed to regular summit meetings and meetings among ministers, other officials and experts. The agreement furthermore establishes a Deep and Comprehensive Free Trade Area between the parties.

The agreement commits Ukraine to economic, judicial and financial reforms to converge its policies and legislation to those of the European Union. Ukraine commits to gradually conform to EU technical and consumer standards. The EU agrees to provide Ukraine with political and financial support, access to research and knowledge, and preferential access to EU markets. The agreement commits both parties to promote a gradual convergence toward the EU's Common Security and Defence Policy and European Defence Agency policies.

The agreement comes after more than two decades in which both parties sought to establish closer ties with each other. On the one hand, the European Union wants to ensure that its imports of grain and natural gas from Ukraine, as well as its exports of goods to Ukraine, are not threatened by instability in the region, believing that instability could eventually be reduced through sociopolitical and economic reforms in Ukraine. Ukraine, on the other hand, wants to increase its exports by benefiting from free trade with the European Union while attracting desirable external investments, as well as establishing closer ties with a sociopolitical entity to which many Ukrainians feel strong cultural connection. Western Ukraine is found to be generally more enthusiastic about EU membership than Eastern Ukraine.The political provisions of the treaty were signed on 21 March 2014 after a series of events that had stalled its ratification culminated in a revolution in Ukraine and overthrow of the then incumbent President of Ukraine, Viktor Yanukovych. This ousting was sparked by Yanukovych's last-minute refusal to sign the agreement. Russia, Ukraine's second largest trading partner, instead presented an association with the existing Customs Union of Russia, Belarus, and Kazakhstan as an alternative. After 21 March 2014, matters relating to trade integration were temporarily set aside (awaiting the results of the 25 May 2014 Ukrainian presidential elections) until the European Union and the new Ukrainian President Petro Poroshenko signed the economic part of the UkraineEuropean Union Association Agreement on 27 June 2014, and described this as Ukraine's "first but most decisive step" towards EU membership.Titles III, V, VI and VII, and the related Annexes and Protocols of the Agreement have been provisionally applied since 1 November 2014, while Title IV has been applied from 1 January 2016, as far as the provisions concern EU competences. Provisions formally came into force on 1 September 2017 following ratification of the Agreement by all signatories.

Euromaidan (; Ukrainian: Євромайда́н, romanized: Yevromaidán, lit. 'Euro Square', IPA: [jeu̯romɐjˈdɑn] ), or the Maidan Uprising, was a wave of demonstrations and civil unrest in Ukraine, which began on 21 November 2013 with large protests in Maidan Nezalezhnosti (Independence Square) in Kyiv. The protests were sparked by the Ukrainian government's sudden decision not to sign the European Union–Ukraine Association Agreement, instead choosing closer ties to Russia and the Eurasian Economic Union. Ukraine's parliament had overwhelmingly approved of concluding the Agreement with the EU, while Russia had put pressure on Ukraine to reject it. The scope of the protests widened, with calls for the resignation of President Viktor Yanukovych and the Azarov Government. The protesters opposed what they saw as widespread government corruption, the influence of oligarchs, abuse of power, and violation of human rights in Ukraine. Transparency International named Yanukovych as the top example of corruption in the world. The violent dispersal of protesters on 30 November caused further anger. The Euromaidan led to the 2014 Revolution of Dignity.

During the uprising, Independence Square (Maidan) in Kyiv was a huge protest camp occupied by thousands of protesters and protected by makeshift barricades. It had kitchens, first aid posts and broadcasting facilities, as well as stages for speeches, lectures, debates and performances. It was guarded by 'Maidan Self-Defense' units made up of volunteers in improvised uniform and helmets, carrying shields and armed with sticks, stones and petrol bombs. Protests were also held in many other parts of Ukraine. In Kyiv, there were clashes with police on 1 December; and police assaulted the camp on 11 December. Protests increased from mid-January, in response to the government introducing draconian anti-protest laws. There were deadly clashes on Hrushevsky Street on 19–22 January. Protesters occupied government buildings in many regions of Ukraine. The uprising climaxed on 18–20 February, when fierce fighting in Kyiv between Maidan activists and police resulted in the deaths of almost 100 protesters and 13 police.As a result, an agreement was signed on 21 February by Yanukovych and leaders of the parliamentary opposition that called for the creation of an interim unity government, constitutional reforms and early elections. Shortly after the agreement, Yanukovych and other government ministers fled the country. Parliament then removed Yanukovych from office and installed an interim government. This 'Revolution of Dignity' was soon followed by the Russian annexation of Crimea and pro-Russian unrest in Eastern Ukraine.