In a major blow to the ruling alliance in Pakistan,one of its key allies the Muttahida Qaumi Movement MQM on Sunday quit the coalition and decided to sit in the Opposition. It has been decided. We will sit on the opposition benches in the National Assembly and the Senate, MQM spokesman Wasay Jalil was quoted as saying by Dawn. MQM,is the second largest party in the alliance with 25 lawmakers in the 342-member National Assembly.