NEW : Group says ISIS has taken over 60 Kurdish villages in three days . U.S. official says it will take months to train and vet Syrian rebels who will take part . Kurdish leaders warn of humanitarian crisis without international help . The approval allows President Barack Obama to carry out part of his stated strategy to combat ISIS , though some political leaders remain divided on the way forward . Comment:
NEW : Group says ISIS has taken over 60 Kurdish villages in three days . U.S. official says it will take months to train and vet Syrian rebels who will take part . Kurdish leaders warn of humanitarian crisis without international help . Comment: