In 2003 Yukos Oil Company was once the largest oil company in Russia, and its oligarch CEO was Russia’s richest man. By 2007 Yukos had been dissolved, its CEO arrested, and its assets acquired by Russian state oil giants Rosneft and Gazprom. The fall of Yukos triggered what may be the largest arbitral dispute of all time. In 2014, the former shareholders of Yukos successfully won a $50 billion award against Russia for violations of the Energy Charter Treaty – by far the largest in history. Now the shareholders need to collect. This Note examines how Yukos could enforce its award by attaching high-value Russian government assets in the United States, in particular the RD-180/181 engines used to power the Atlas V and Antares rockets