The United Nations Security Council has strongly condemned the abduction of hundreds of Nigerian schoolgirls and is demanding their immediate and unconditional release.
In a joint statement, the council said the mass kidnappings by the militant Islamist group, Boko Harem, may amount to crimes against humanity under international law.
U.S. First Lady Michelle Obama has also spoken up.
Speaking instead of her husband in the weekly presidential address, Mrs. Obama said the mass kidnapping is part of a wider pattern of intimidation facing girls around the world who pursue an education.
Scores of militants kidnapped more than 250 girls from a secondary school in a remote part of northeastern Nigeria on April 14th and the group has threatened to sell them into slavery.
U.S., British and French experts are already in Nigeria scouring the area for any sign of the girls.