Hostility between Iran and the United States has intensified since the mid-2000s. America's allegations regarding Iran's nuclear program and its association with terrorist organizations are the main drive for this rising tension. This study focuses on the latter. Specifically, it examines Tehran's ties to militant groups in Iraq, Hezbollah in Lebanon, and Hamas in the Palestinian Territories. I argue that although American and Iranian interests in the region are very different, they are not necessarily mutually exclusive.