"For the past six decades, the United States has been the region’s hegemonic power. However, Trump’s unilateralist approach and the future of JCPOA may change the calculation by creating a rift among the transatlantic allies, and bringing the eastern bloc powers, Europe and regional powers such as Iran, Turkey and Iraq, closer together [and along with other factors] has the potential to transform international power politics, shifting from an American-led system to a multi-polar world"