Pakistani politician Arbab Khizer Hayat speaks during an interview with AFP in Peshawar on March 27, 2013

Pakistani politician Arbab Khizer Hayat speaks during an interview with AFP in Peshawar on March 27, 2013. For politicians in most countries, switching parties is a once-in-a-career move made only after careful thought. But in Pakistan, changing sides to gain advantage is standard practice.