Ali Haidar Gilani (C), son of former Pakistani Prime Minister Yusuf Reza Gilani, waves as he arrives at his residence in eastern Pakistan's Lahore on May 11, 2016. Ali Haidar Gilani, the son of Pakistani former Prime Minister Yusuf Reza Gilani, who was kidnapped three years ago and recovered in Afghanistan on Tuesday, rejoined family on Wednesday. (Xinhua/Sajj