US troops in Chad seek Nigerian kidnapped girls
The US has deployed 80 military personnel to Chad to help locate more than 200 girls kidnapped in Nigeria, President Barack Obama says.
Mr Obama has written to House Speaker John Boehner and to the Senate notifying politicians about the steps under way to assist in the return of the abducted girls.
The president says the service members will help with intelligence, surveillance and reconnaissance aircraft for missions over northern Nigeria.
He says the force will stay in Chad until its support is no longer necessary. Chad shares a portion of its western border with north-eastern Nigeria.
The girls were kidnapped last month by Islamic extremist group Boko Haram.