Nigerian President Goodluck Jonathan vows to rescue the missing girls. 

Amid mounting international pressure, Nigerian President Goodluck Jonathan spoke Sunday about his government's efforts to rescue more than 200 schoolgirls abducted by militants. "Wherever these girls are, we'll get them out," he said, acknowledging that officials don't know where they are.

The President criticized the girls' parents for not cooperating fully with police. "What we request is maximum cooperation from the guardians and the parents of these girls. Because up to this time, they have not been able to come clearly, to give the police clear identity of the girls that have yet to return," he said.

Protesters took to the streets over the weekend. On Sunday, about 100 demonstrators gathered outside the Nigerian High Commission in London again, where they chanted "Bring them back!" as well as "Not for sale!" and "African lives matter!"