Deadly Pakistani school attack raises security questions

CHARSADDA, Pakistan (AP) — Once again, Islamic militants stormed a school in northeastern Pakistan in a deadly attack that lasted for hours. And once again, the blood of students and teachers stained classrooms and hallways, raising questions about whether security forces are able to protect the country's educational institutions from extremists.
At least 20 people were killed and 23 were wounded Wednesday in the assault at Bacha Khan University in Charsadda before the four gunmen were slain and the military declared an end to the siege. Two teachers were among the dead, including a chemistry professor who was praised as a hero for shooting back at the attackers and allowing some students to escape.