Relationship dossier
Ukraine
United States
Relationship assessment
Close strategic partnership centered on Ukraine’s security and U.S. support
Ukraine toward United States
+65Ukraine has pursued close security and diplomatic cooperation with the United States, including through the 2024 bilateral security agreement and sustained efforts to coordinate on military assistance and Ukraine’s defense.
United States toward Ukraine
+75The United States has provided Ukraine with substantial military, financial and humanitarian assistance, imposed sanctions on Russia, and supported Ukraine diplomatically. The 2024 bilateral security agreement formalized a further commitment to security cooperation, though it is not a mutual-defense treaty.
Overall relationship
+70The relationship is anchored in sustained U.S. support for Ukraine’s defense and Ukraine’s pursuit of a close strategic partnership with Washington. The 2024 security agreement adds a durable framework for cooperation, while disputes over the timing, conditions and permitted use of assistance qualify the partnership.
How to read these scores
Scores are rough judgments, not objective measurements or current verification. Directional scores describe government policy and conduct, not public opinion. The overall score is an independent estimate, never an average.
- −100
- Extreme sustained hostility
- −50
- Substantially adversarial
- 0
- Mixed or neutral, supported by knowledge
- +50
- Substantially cooperative
- +100
- Exceptionally close sustained partnership
“Not assessed” means there is no recorded score. Pair existence makes no claim about diplomatic recognition or established relations.
Relationship context
Overview
Ukraine and the United States have developed a close strategic relationship, especially through extensive U.S. military, financial and diplomatic support for Ukraine following Russia’s 2014 aggression and full-scale invasion in 2022. Ukraine has pursued deeper security cooperation with Washington, and the two governments signed a bilateral security agreement in 2024. Differences have included the pace and scope of U.S. assistance and the limits placed on some uses of supplied weapons.
Areas of tension
- Differences over the timing and scale of U.S. military assistance.
- U.S. restrictions on some uses of weapons supplied to Ukraine.
- Differences over the timing and conditions for Ukraine’s NATO membership.
Key developments
The United States, Ukraine, Russia and the United Kingdom signed the Budapest Memorandum, in which the United States provided security assurances related to Ukraine’s accession to the Nuclear Non-Proliferation Treaty as a non-nuclear-weapon state.
The United States and Ukraine signed a bilateral security agreement committing to continued security cooperation and support for Ukraine’s defense.
The United States expanded military, financial and humanitarian assistance to Ukraine following Russia’s full-scale invasion.
Major uncertainties
- The longer-term scope and implementation of the 2024 security commitments remain uncertain.
- The future scale and conditions of U.S. military and financial support are uncertain.