Iraq .
Yes, weapons, particulary WMD's (weapons of mass destruction) and germ warfare were mentioned at the time of the invasion.
Congress feared Saddam Hussein was stockpiling weapons of mass destruction
By claiming Iraq had weapons of mass destruction, making it a threat to national security
By claiming Iraq had weapons of mass destruction, making it a threat to national security
The Bush administration believed that Iraq had Weapons of Mass Destruction
The US invaded Iraq on March 20, 2003 with the intent of overthrowing Saddam Hussein and discovering his cache of weapons of mass destruction (which were never found).
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Japan was bombed heavily from the air, but the American use of atomic weapons lead to her surrender without requiring the US to invade.
The US argued that it believed that Iraq possessed weapons of mass destruction that they were not letting UN inspectors view. To prevent Iraq from using those weapons, an invasion was necessary.Whether or not that was the actual reason for the invasion is subject to controversy.
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