Barack Obama says the United States will do "everything we can" to help Nigeria in its search for more than 200 girls kidnapped by the Boko Haram Islamist militant group.
The US President told NBC News in an interview that Nigerian President Goodluck Jonathan had accepted US offers for assistance.
"In the short term our goal is obviously is to help the international community, and the Nigerian government, as a team to do everything we can to recover these young ladies," he said.
In the longer term, he said, "we're also going to have to deal with the broader problem of organizations like this that can causes such havoc in people's day-to-day lives."
The Nigerian military has flown more than 300 sorties in the hunt for the abducted schoolgirls, a Major has told ITV News' Rageh Omaar.
A newly released video from Boko Haram reportedly shows the kidnapped Nigerian schoolgirls.
The man who started a viral hashtag campaign in support of the kidnapped Nigerian schoolgirls says it has forced the government to act.