Saddam already defying UN, says White HouseBy Toby Harnden and Anton La Guardia The White House last night began to build its case that Saddam Hussein was already defying the United Nations. It said Iraq's repeated attempts to fire on American and British aircraft in the no-fly zones amounted to a "material breach" of the latest Security Council resolution. But Britain has not echoed Washington's comments and officials in London privately expressed concern that America could seize on Iraq's behaviour in the no-fly zones as a possible casus belli. Whitehall sources said key members of the Security Council disputed the...