Haiti’s prime minister has told CNN that “hundreds of thousands” of people have died following Tuesday’s earthquake. Meanwhile, Haitian President René Préval said the toll of Tuesday's earthquake was "unimaginable" and estimated that thousands are dead in what President Obama called "a truly heart-rending situation." The quake was the strongest earthquake to hit the island, experts say, since 1770. The headquarters of the U.N. mission to the island is among the collapsed buildings, and 150 of its employees are missing while 14 are dead. The Red Cross announced they're out of medical supplies. Obama promised to address with a "swift and aggressive" relief effort.