Jimmy Carter ignored the unwritten rule that former presidents do not criticise a current one. Carter takes issue with just about everything George W. Bush has done in office. He criticises Bush for not pressuring Israel to withdraw from the Gaza Strip, for threatening to abandon the anti-ballistic missile treaty and for not supporting human rights more strongly. He says Bush has ignored moderates in both parties and calls Bush's proposed missile defense shield a "technologically ridiculous" idea that will "re-escalate the nuclear arms race". The BBC's Nick Bryant reports