This paper explores how international sanctions have affected South Africa and North Korea in different ways, despite both countries facing significant global pressure. Using a comparative approach, the study looks at the political and economic conditions that influenced the outcomes of these sanctions. In the case of South Africa, international sanctions, especially those targeting trade, finance, and cultural exchanges, played an important role in supporting domestic resistance and pushing the apartheid regime toward reform. These measures were more effective largely because of South Africa’s deep ties to the global economy and growing internal opposition to apartheid. North Korea, by contrast, has remained largely unaffected in terms of policy change, even under some of the toughest sanctions ever imposed. Its isolated economy, strong centralized control, and backing from key allies have helped the regime withstand external pressure. The comparison reveals that sanctions do not work the same way in every context. Their success depends on factors like type of government, level of global integration, and international political dynamics. By analyzing these two cases, the paper offers insight into the conditions under which sanctions are more or less likely to influence state behavior.