Millions of Haitians in need of humanitarian aid as gangs take over Port-au-Prince Fox News' Bryan Llenas provides details on the unrest in Haiti and efforts to rescue Americans as gang uprisings in Port-au-Prince force residents to flee to the Dominican Republic. NEW You can now listen to Fox News articles! Threats from Haitian gangs reportedly prompted the United Nations (U.N.) and foreign embassies to advise staff to stay off the streets of the capital Port-au-Prince Monday. U.N. security