What significance to weapons of mass destruction have in the US invasion of Iraq?

The significance of weapons of mass destruction (WMD) in the US invasion of Iraq in 2003 was pivotal, as the Bush administration cited the potential existence of WMDs as a primary justification for military action. The belief that Saddam Hussein possessed such weapons fueled concerns about regional stability and the threat to US allies, particularly Israel. However, the subsequent failure to find WMDs undermined the rationale for the invasion and led to widespread criticism of the US government's intelligence and decision-making processes. This controversy has had lasting implications for US foreign policy and public trust in government narratives.