In past years, the spring season has seen a significant upsurge in fighting between the Taliban and NATO forces and their local allies. This year, the Taliban named their offensive Khaybar, after the 629 A.D. Battle of Khaybar, when Muslims in present day Saudia Arabia attacked a Jewish settlement near the city of Medina.
In the presidential election, final results of the first round of voting, held April 5, are scheduled to be announced on Wednesday. The two top vote-getters are widely expected to face a runoff later this month.
Associated Press writers Amir Shah and Greg Keller in Kabul contributed to this report.