Hadida is in Diyala province, near the city of Baquba, once an insurgent stronghold.

CNN: Militants clash with security forces in Iraq

Police called for backup from the army and sealed off the Hadida area.

CNN: Militants clash with security forces in Iraq

This was an important concept for would-be future business leaders to grasp, said Allegre Hadida, lecturer in strategy at Judge.

CNN: Learning to be creative

At least five federal police officers were killed and four others were wounded during the clashes in Hadida, about 50 miles north of Baghdad, Interior Ministry officials said.

CNN: Militants clash with security forces in Iraq