The Ukrainian Crisis in 2014 has made headline throughout the world. The Russian Federation started the intervention knowing that the international society would condemn their actions, and will be facing embargos from other states. However, it is not unpredictable that this was going to happen; researchers are trying to understand the motives behind the Russian intervention. As to this research, it aims to understand and to explain as to why the Russian government intervenes in the Ukrainian soil through the perspective of realism and using the national interest theory and rational choice theory. This research shows the interests of the Russian Federation political, military, and economic interests. It also reveals the strong capabilities of the Russian Federation in making an intervention in foreign soil and the acknowledgement that there will be no further interruptions from a third party in their intervention. Finally, this research reveals the rational reasons why Russia issued policy of Intervention in the Ukrainian Crisis.