Pakistan blocked the head of an airline whose jet crashed near the capital from leaving the country as it began an investigation Saturday into the country's second major air disaster in less then two years. The Bhoja Air passenger jet crashed Friday as it tried to land in a thunderstorm at Islamabad's main airport, killing all 127 people on board. The small domestic airline, which resumed operations in March after an 11-year pause, has said the weather was the cause. Speaking at the scene of the...