What Was the Logic Behind the United States' Claim That

What was the logic behind the United States' claim that the United Nations Security Council would become irrelevant if it did not endorse regime change in Iraq?

A) The United Nations is categorically opposed to dictatorships.
B) Regime change naturally follows a policy of economic sanctions.
C) The United States was the largest contributor to the United Nations and failure to listen to the United States was ill advised.
D) Failing to support regime change would be a failure to uphold its own resolutions on Iraq's weapon programs.
E) Iraq's continued refusal to vote on resolutions was undermining the United Nations.