[6] The two countries cooperate closely on the political situation in Belarus and Ukraine[7] with Denmark having sent four F-16 jets to Lithuania in 2022 as a response to the Russo-Ukrainian crisis.

[10] Relations between the two countries were primarily focused on finding common ground on agriculture, infrastructure projects, trade and economic cooperation.

[11] Denmark never recognized Soviet sovereignty over Lithuania and was the first country to establish diplomatic relations with the new Lithuanian state on 24 August 1991, on the instruction of Foreign Minister Uffe Ellemann-Jensen.

[12] Prior to the establishment of diplomatic relations, Lithuanian Prime Minister Kazimira Prunskienė had visited Denmark in April 1990 prompting protest from Soviet authorities.

[14] On 20 December 1990, Lithuanian Foreign Minister Algirdas Saudargas visited Copenhagen for the opening of the Baltic Information Office where he also met Ellemann-Jensen.

[16] In February 1991, the two countries signed a joint protocol of cooperation in which it is stated that Denmark would continue to support Lithuania on the international scene and that diplomatic relations would sume resume.

[17] As diplomatic relations were established in August 1991, Queen Margrethe II insisted on receiving the three visiting Baltic foreign ministers despite being at her summer palace.

[18] In September 1991, Audrius Butkevičius, General Director of the Lithuanian Defence Department visited Copenhagen where he held various meetings to strengthen military relations, including with Chairman of the Parliamentary Defense Committee Hans Hækkerup.

One of the major tasks for the new Defence Attaché was to support the visit of Queen Margrethe II to Lithuania set to take place on 31 July 1992.

[20] Later same year, a Lithuanian military delegation led by Lieutenant Colonel Valdas Tutkus visited Denmark where they met Chief of Defence Jørgen Lyng.

During the meeting, Denmark offered a handful of Lithuanian officers a chance of conducting a tour with the Danish battalion in Croatia where they would be able to collect first-hand impressions from a UN peacekeeping mission.

For this, Denmark supported and mentored Lithuania on wide-range subjects from negotiations with the European Union to local bureaucratic projects.

Denmark moreover negotiated for financial support from the EU for Lithuania to close down Ignalina Nuclear Power Plant – a prerequisite for membership.

[39][40] Due to the Russian invasion of Ukraine, Danish Prime Minister Mette Frederiksen accompanied by leaders of five parliamentary parties paid a visit to the Šiauliai Air Base in late March 2022.