He abandoned public service in 2013, citing his disagreement with Ukraine president Viktor Yanukovych's course, and chaired the UART Foundation for Cultural Diplomacy.

At the height of the early stages of the Russian invasion of Ukraine in 2014, Kuleba decided to return to the Ministry of Foreign Affairs as Ambassador-at-Large to launch strategic communications.

[13] After Putin announced a partial mobilization of Russia's armed forces and referenced a potential use of nuclear weapons, Kuleba said that "Putin has shown utter disrespect to China, India, Mexico, Turkey, other Asian, African, Middle Eastern, Latin American nations which have called for diplomacy and an end to Russia's war on Ukraine.

[18] In a December 2022 interview with the Associated Press, Kuleba called for a February 2023 peace summit at the United Nations mediated by secretary-general António Guterres, only inviting Russia if it faces an international court for war crimes.

[19] In another December interview, he predicted that:[20] After this war we will be full members of both the EU and NATO, and guarantors of global food security.

And if you share the same principles and values, irrespective of your geography, you belong to the West.In December 2022 Kuleba criticized India for buying cheap Russian oil.

"[22] As the one-year anniversary of the invasion drew near, Kuleba went to the US and spoke to Harvard University students,[23][24] while he quarterbacked a number of diplomatic initiatives at the United Nations in New York, for example passing Resolution ES-11/7 of the Eleventh emergency special session of the United Nations General Assembly on 23 February and one day later the 9269th meeting of the United Nations Security Council addressed the "Maintenance of peace and security of Ukraine", during which a roll call of friends and allies spoke in favour of Ukraine for over three hours.

One of the 10 points in this plan is accountability and accountability implies the tribunal and paying for the damage inflicted and the most important part of this peace plan is of course restoring territorial Integrity of Ukraine so when we hear arguments coming from some experts or thinkers that maybe it's worth freezing the conflict our response is you know we need frozen assets not frozen conflict.

I think this is one of the motivations that brings all these countries at the table because they realize the consequences of not participating in an effort to restore peace on just terms.In December 2024, the Belfer Center for Science and International Affairs at Harvard Kennedy School has announced the appointment of Dmytro Kuleba as a non-resident Senior Fellow.

The official release described Kuleba as “internationally recognized as one of the most influential diplomats of his generation and a global champion for democracy, freedom, and resilience».

[34] On December 17, 2024, it became known that from January 2025, Dmytro Kuleba will become an associate professor at the Sciences Po and will teach wartime diplomacy there.

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