Over 50,000 polling stations are open across the country for electing a 328-seat Parliament.
Pak Defence Min Naveed Qamar has cautioned the US against a "mindless, hasty withdrawal" in 2014.
The Taliban marked 10th anniversary of the Afghan war by claiming to have forced the United States and NATO to withdraw from the country.
Major earthquake rattles Nepal, India
Day in Pics: 25th April
Showbiz World - April 25, 2015