Pakistani authorities have detained a senior aide of top Pakistani nuclear scientist Abdul Qadeer Khan, amid a probe into the alleged leaking of nuclear information to Iran, his family said. "Major Islam ul-Haq was picked up by the security officials from the residence of Dr Qadeer Khan at about 8:30pm on Saturday," his wife Nilofer said. Islam, a retired member of the military, is the principal staff officer of Qadeer Khan, who created Pakistan's nuclear bomb. "Some army officers, including members of the military intelligence, came in two jeeps and said they want to take Major Islam for interrogation," Nilofer...