In the first forum organized by the two parties, Senator John Kerry accused President Bush last night of making a “colossal error” by invading Iraq. Bush defended the attack and charged he was making the country and world safer. Kerry attacked Bush for not focusing on Osama Bin Laden, for spending hundreds of billions in Iraq and for ignoring the nuclear threat posed by North Korea. Bush accused Kerry of sending mixed messages to the American public, the troops and world community on major issues including Iraq.