Since February 24, 2022, the Russian Federation's war against Ukraine has had wide-ranging implications for U.S. national security and for an array of global geopolitical and economic issues. This report compiles some of CRS's products on various aspects of this conflict and is updated as CRS develops new products. It also includes some products published before the invasion that offer relevant background and context.
To contact CRS experts, congressional clients may use the author information on each of the products below.
Conflict Developments and Background Issues
CRS Insight IN12186, Wagner Group Mutiny in Russia, by Andrew S. Bowen
CRS In Focus IF12344, Russia's Wagner Private Military Company (PMC), by Andrew S. Bowen
CRS In Focus IF12150, Ukrainian Military Performance and Outlook, by Andrew S. Bowen
CRS Report R47068, Russia's War in Ukraine: Military and Intelligence Aspects, by Andrew S. Bowen
CRS In Focus IF12277, Russia's War on Ukraine: U.S. Policy and the Role of Congress, by Paul Belkin, Rebecca M. Nelson, and Cory Welt
CRS In Focus IF11862, Ukrainian Armed Forces, by Andrew S. Bowen
CRS Report R45008, Ukraine: Background, Conflict with Russia, and U.S. Policy, by Cory Welt
CRS Report R45861, Russia's Nuclear Weapons: Doctrine, Forces, and Modernization, by Mary Beth D. Nikitin
CRS Insight IN11882, Humanitarian and Refugee Crisis in Ukraine, by Rhoda Margesson and Derek E. Mix
U.S. and International Policy Responses
Foreign Assistance and Related Funding
CRS In Focus IF12040, U.S. Security Assistance to Ukraine, by Christina L. Arabia, Andrew S. Bowen, and Cory Welt
CRS Insight IN12107, Department of Defense Supplemental Funding for Ukraine: A Summary, by Brendan W. McGarry
CRS Report R47275, Department of State, Foreign Operations, and Related Programs (SFOPS) Supplemental Funding for Ukraine: In Brief, by Emily M. McCabe
CRS In Focus IF12305, U.S. Direct Financial Support for Ukraine, by Emily M. McCabe and Nick M. Brown
CRS Report R47070, Department of State, Foreign Operations, and Related Programs: FY2023 Budget and Appropriations, by Emily M. McCabe and Cory R. Gill
CRS Report R47579, Department of State, Foreign Operations, and Related Programs: FY2024 Budget and Appropriations, by Emily M. McCabe and Cory R. Gill
CRS Report R47582, FY2024 Defense Budget Request: Context and Selected Issues for Congress, by Cameron M. Keys and Brendan W. McGarry
Sanctions Policy and the Russian Economy
CRS In Focus IF12062, Russia's War on Ukraine: Financial and Trade Sanctions, coordinated by Rebecca M. Nelson
CRS Insight IN11897, Russia's War Against Ukraine: European Union Responses and U.S.-EU Relations, by Kristin Archick
CRS Insight IN11869, Russia's War Against Ukraine: Overview of U.S. Sanctions and Other Responses, by Cory Welt
CRS In Focus IF12092, The Economic Impact of Russia Sanctions, by Rebecca M. Nelson
CRS In Focus IF12066, Russia's Trade and Investment Role in the Global Economy, by Andres B. Schwarzenberg
CRS In Focus IF12071, Russia's Trade Status, Tariffs, and WTO Issues, by Cathleen D. Cimino-Isaacs, Nina M. Hart, Brandon J. Murrill, and Liana Wong
CRS Legal Sidebar LSB10840, Forfeiture Trail for Russian Oligarchs' Luxury Assets, by Charles Doyle
CRS In Focus IF12120, China's Economic and Trade Ties with Russia, by Karen M. Sutter and Michael D. Sutherland
CRS In Focus IF11138, Russia's Nord Stream 2 Natural Gas Pipeline to Germany Halted, by Paul Belkin, Michael Ratner, and Cory Welt
CRS In Focus IF12063, Enforcement of Economic Sanctions: An Overview, by Nina M. Hart
CRS Report R45415, U.S. Sanctions on Russia, coordinated by Cory Welt
CRS Report R45618, The International Emergency Economic Powers Act: Origins, Evolution, and Use, coordinated by Christopher A. Casey
CRS Insight IN11949, NATO: Finland Joins as Sweden's Accession Faces Delay, by Kristin Archick, Paul Belkin, and Andrew S. Bowen
CRS Report R47476, Transferring Fighter Aircraft to Ukraine: Issues and Options for Congress, coordinated by Nathan J. Lucas
CRS In Focus IF11623, Hypersonic Missile Defense: Issues for Congress, by Kelley M. Sayler
CRS In Focus IF12297, PATRIOT Air and Missile Defense System for Ukraine, by Andrew Feickert
CRS Insight IN11866, Russia's Invasion of Ukraine: NATO Response, by Paul Belkin
CRS In Focus IF12068, U.S. Nationals and Foreign Military Service, by Jennifer K. Elsea, Jonathan M. Gaffney, and Alan Ott
CRS Insight IN12042, Iran's Transfer of Weaponry to Russia for Use in Ukraine, by Andrew S. Bowen, Carla E. Humud, and Clayton Thomas
CRS Report RS22907, Cluster Munitions: Background and Issues for Congress, by Andrew Feickert and Paul K. Kerr
CRS In Focus IF12389, Russia's Wagner Group in Africa: Issues for Congress, coordinated by Alexis Arieff
CRS Insight IN12192, NATO's 2023 Vilnius Summit, by Paul Belkin
CRS Report R45784, Poland: Background and U.S. Relations, by Derek E. Mix
CRS Report R47591, Central Asia: Implications of Russia's War in Ukraine, coordinated by Maria A. Blackwood
CRS In Focus IF12100, China-Russia Relations, by Ricardo Barrios and Andrew S. Bowen
CRS Report R47160, Middle East and North Africa: Implications of 2022 Russia-Ukraine War, coordinated by Christopher M. Blanchard
CRS In Focus IF12302, U.S.-European Relations in the 118th Congress, by Kristin Archick
CRS Insight IN11889, Designation of Ukraine for Temporary Protected Status: Impact and Other Considerations, by Hillel R. Smith, Jill H. Wilson, and Kelsey Y. Santamaria
CRS Report R47290, Ukrainian Eligibility for Selected Benefits Based on Immigration Status: In Brief, by Abigail F. Kolker
CRS Report R46139, Estonia, Latvia, and Lithuania: Background and U.S.-Baltic Relations, by Derek E. Mix
CRS Report R45307, Georgia: Background and U.S. Policy, by Cory Welt
CRS In Focus IF10894, Moldova: An Overview, by Cory Welt
International Institutions and Global Dimensions
CRS Legal Sidebar LSB10709, War Crimes: A Primer, by Jennifer K. Elsea
CRS Legal Sidebar LSB10704, The Role of International Tribunals in the Response to the Invasion of Ukraine, by Stephen P. Mulligan
CRS Legal Sidebar LSB10735, International Neutrality Law and U.S. Military Assistance to Ukraine, by Stephen P. Mulligan
CRS Insight IN11876, United Nations Security Council and General Assembly Responses to the Russian Invasion of Ukraine, by Luisa Blanchfield and Matthew C. Weed
CRS Legal Sidebar LSB10710, The Law of War and the Russian Invasion of Ukraine, by Stephen P. Mulligan
CRS Legal Sidebar LSB10747, International Atrocity Crimes and Their Domestic Counterparts, by Stephen P. Mulligan
CRS In Focus IF12107, Ukraine and International Financial Institutions, by Martin A. Weiss
CRS Report R47468, U.S. Measures to Provide Liquefied Natural Gas for the European Union, by Lexie Ryan
CRS In Focus IF12104, Russia's 2022 War Against Ukraine: Global Economic Effects, by Andres B. Schwarzenberg
CRS Insight IN11894, Russia's Invasion of Ukraine: Implications for Agricultural Trade and Production, by Stephanie Rosch
CRS In Focus IF12061, Critical Infrastructure Security and Resilience: Countering Russian and Other Nation-State Cyber Threats, by Brian E. Humphreys