The revolution also had profound implications for Iran's foreign policy, as the new government sought to assert its independence and challenge the dominance of Western powers in the region. Iran's support for anti-imperialist movements and organizations, such as Hezbollah in Lebanon and Palestinian resistance groups, further alienated it from the United States and its allies. The hostage crisis at the American embassy in Tehran in 1979, in which 52 Americans were held captive for over a year, epitomized the deepening enmity between Iran and the West. Despite its initial successes, the Islamic Republic faced numerous challenges in the years following the revolution.