PRIME MINISTER'S Nawaz Sharif's war on all forces opposed to his writ shows no signs of ending. In his search for absolute authority, he has taken on a new enemy - the Senate (upper house) - even as the Supreme Court, in a fresh spurt of judicial activism, dealt him a set of severe blows. On January 10, it stayed the death sentences handed out by the controversial, new military trial courts in Karachi. The next day, it also turned down the federal government's November 1998 suspension of the provincial assembly of Sindh.