In a recent White House briefing, President Obama called Russia's invasion of Crimea a clear violation of Ukraine's sovereignty, territorial integrity, and international law. When assessing the Russian-Ukrainian crisis in Crimea, the commander of the European Command (EUCOM) and the Supreme Allied Commander of European Forces (SACUER) must take into account US interests in the region before deciding on an appropriate course of action. This essay aims to evaluate four of the United States' national interests through the perspective of EUCOM and SACUER. The first section will outline the role of EUCOM and SACUER in the European region and evaluate the general issue of Russia's invasion of Crimea. The second section will outline four of the US national interests at stake: international order, economic and trade prosperity, energy supply, and freedom of the seas. Thus, this assessment of US interests in Crimea supports the options of non-intervention and a non-provocative stance in order to maintain long-term stability because the Russian invasion only violated the peripheral interests of EUCOM and SACUER. One of the main objectives of EUCOM Its role is to strengthen NATO's collective defense and foster its transformation after the fall of the Soviet Union. This is achieved by strengthening partners' capacity to strengthen transatlantic security. EUCOM supports American interests in Europe as outlined in the National Security Strategy: the security of the United States, its citizens, and US allies and partners; A strong, innovative, and growing U.S. economy in an open international economic system that promotes opportunity and prosperity; Respect for universal values ​​at home and in the world; and An advance in the international order by US leaders...... half of the document ......r responsibility to address their alliances and protect the flow of energy resources in the European region. NATO's use of force in Crimea is also unlikely as increased escalation of force or war is not worth risking lives to uphold a non-NATO country's image of sovereignty. Bibliography "NATO confirms readiness for Ukraine to join the organization". KyivPost, accessed March 16, 2014, http://www.kyivpost.com/content/ukraine/nato-confirms-readiness-for-ukraines-joining-organ-63797.html."NATO launches 'Intensified Dialogue' with Ukraine." NATO, accessed March 16, 2014, http://www.nato.int/docu/update/2005/04-april/e0421b.htm.Lowther, Adam and Casey Lucius. "Identifying America's Vital Interests." Space and Defense 7, n. 1 (Winter 2014): 39-52. Obama, Barrack. “Presidential Statement on Ukraine.” , accessed March 17, 2014.