Boko Haram Chief Says Nigerian Offensive Failing

The leader of the Nigerian Islamist group Boko Haram says his forces are beating back a military offensive aimed at stopping the group’s four-year insurgency.

In a video released to news agencies, Boko Haram chief Abubakar Shekau said Nigerian soldiers encountering militants have run away and thrown down their arms in flight.

Shekau called on like-minded Islamists in Iraq, Pakistan, Afghanistan and Syria to join the fight to create an Islamic state in Nigeria.

The video shows the …