In 895, the Hungarians entered the Pannonian Basin through the Verecke Pass in the Carpathian Mountains (today in Ukraine), where they went on to establish the Kingdom of Hungary.

[16] In response, Ukrainian officials announced concessions to some Hungarian demands, most notably extending the transition period until the implementation of the language law to 2023.

The video, published by Ukrinform, captured recipients of new passports reciting an oath of allegiance to Hungary and singing the Hungarian national anthem.

[22] In response to the incident, the Foreign Ministry of Ukraine declared the local Hungarian consul in Berehove persona non grata, expelling him from Ukrainian territory and accusing him of violating the Vienna Convention on Consular Relations.

In turn, Hungary announced the expulsion of a Ukrainian consul in Budapest and reiterated threats to block Ukraine's further accession to NATO and the European Union.

Specifically, the Hungarian government worked to sway voters in favor of party leader Vasyl Brenzovych and two other candidates contesting seats in the Verkhovna Rada, Ukraine's parliament.

Throughout July 2019, a number of top Hungarian figures visited Zakarpattia in order to hold rallies and lobby voters for the party's candidates, including Minister of Foreign Affairs Péter Szijjártó.

Around the same time, party leader and parliamentary candidate Vasyl Brenzovych visited Budapest to attend a meeting with Prime Minister of Hungary Viktor Orbán.

[24] In response to the meddling, the Ukrainian government accused Hungary of violating the Charter of the United Nations and Vienna Convention on Diplomatic Relations.

Shortly after the contract was signed, the Ukrainian Ministry of Foreign Affairs issued a statement deriding the deal as politically motivated and economically unreasonable, meant solely to please the Kremlin, and intended to harm the national interests of Ukraine and Hungary–Ukraine relations.

[32] In December 2021, the Hungarian government reversed course, signing an agreement to transport up to 2.9 billion cubic meters of natural gas through Ukraine annually on top of the Gazprom deal.

[33] On 28 December, after the deal's signing, the foreign ministers of both nations declared their "mutual intention to improve bilateral relations" between Hungary and Ukraine.

Áder added that the conflict was "not provoked by Kyiv", and said that Hungary "hold[s] the leaders of the Russian Federation responsible for the bloodshed", while Orbán noted that military support "out of the question, though we will, of course, provide humanitarian aid".

[36] During his victory speech on 3 April, Orbán said that Ukrainian president Volodymyr Zelenskyy was one of the "opponents" that he had overcome in order to win the parliamentary elections.

[37] On 6 April, Hungary signaled its intent to agree to pay for Russian gas in rubles, breaking ranks with the rest of the European Union.

Later on 15 July, Hungarian President Katalin Novák accepted an invitation by Kyiv for a visit on 23 August for the Crimean Platform with a prior stop in the Zakarpattia Oblast.

[46] Importantly, the Polish Centre for Eastern Studies notes in an analysis that the Hungarian government did not seem to place national minorities legislation concerns at the center of its discourse on opposing "Ukraine’s integration with the EU", instead "[focusing] on accusing the Ukrainian leadership of ‘widespread and systemic corruption’ and emphasising Ukraine’s problems with the rule of law and democracy".

[49] Due to their significant minority populations within each other's borders, Hungary and Ukraine each maintain an extensive network of diplomatic missions across both nations.