Nigeria's President Goodluck Jonathan has vowed to wage a "total war" against militant Islamist group Boko Haram.
Speaking on the the 15th anniversary of the end of military rule, he said "international terrorism" threatened Nigeria's democratic gains.
"With the support of Nigerians, our neighbours and the international community, we will reinforce our defence, free our girls and rid Nigeria of terrorists," Mr Jonathan said, in a televised speech to mark Democracy Day.
He added that he was determined to protect Nigeria's democracy.
"I have instructed our security forces to launch a full-scale operation to put an end to the impunity of terrorists on our soil," he said.