i only want you to fix the part highlighted in turkuaz

which is this part
7.1 Collective Security, Unilateral Military Intervention, and Bilateral Military Intervention
Each of these elements had some degree of impact on the Iraq war. For example, the US believed they were acting ethically because of collective security and believed that weapons of mass destruction were in Iraq, which could risk the nation’s safety. However, it was also the leader of the invasion, making it a unilateral military intervention. It showed that one nation can lead an intervention, even if the purpose is not well grounded. It also impacts bilateral military intervention because of the implications on the ability of one nation to pressure another to engage in the intervention.

i want you to explain it in more detail and place it in the context of the case studies

highlight the change in turquaz too please

2003 iraq us war