Like an ancient engraving that is exposed bit by bit as successive layers of sand are brushed away, the general lines of strategy were gradually revealed this week. The suspected criminal and those around him are laying out the hunting nets and piling on the dry leaves for camouflage. The main targets have been marked. The first arrows have been shot. This is just the beginning of what looks to be a war the prime minister intends to wage against anyone who’s not counted among his supporters.