Even if last week's outrageous, anti-American slurs by Nelson Mandela, former South African president and honorary Canadian citizen, might be excused by the frailties of his advancing years -- he is 84 and suffering failing health -- they should not be politely ignored. Anti-war agitators have already used Mr. Mandela's iconic stature to bolster their feeble case against an invasion of Iraq. London's leftist Daily Mirror, for instance, called Mr. Mandela "the most admired statesman in the world," and insisted his remarks had "demolished the stand taken by [U.S. President] George W. Bush and [British Prime Minister] Tony Blair, and...