"During the lead-up to the war, Obama’s advisors were suspicious of the Bush administration’s claims that Iraq somehow threatened U.S. national security to the extent that it required a U.S. invasion and occupation of that country. For example, Zbigniew Brzezinski, national security advisor in the Carter administration, argued that public support for war “should not be generated by fear-mongering or demagogy.”
By contrast, Clinton’s top advisor and her likely pick for secretary of state, Richard Holbrooke, insisted that Iraq remained “a clear and present danger at all times.”
Brzezinski warned that the international community would view the invasion of a country that was no threat to the United States as an illegitimate an act of aggression. Noting that it would also threaten America’s leadership, Brzezinski said that “without a respected and legitimate law-enforcer, global security could be in serious jeopardy.” Holbrooke, rejecting the broad international legal consensus against offensive wars, insisted that it was perfectly legitimate for the United States to invade Iraq and that the European governments and anti-war demonstrators who objected “undoubtedly encouraged” Saddam Hussein.
Another key Obama advisor, Joseph Cirincione of the Carnegie Endowment, argued that the goal of containing the potential threat from Iraq had been achieved, noting that “Saddam Hussein is effectively incarcerated and under watch by a force that could respond immediately and devastatingly to any aggression. Inside Iraq, the inspection teams preclude any significant advance in WMD capabilities. The status quo is safe for the American people.”
By contrast, Clinton advisor Sandy Berger, who served as her husband’s national security advisor, insisted that “even a contained Saddam” was “harmful to stability and to positive change in the region,” and therefore the United States had to engage in “regime change” in order to “fight terror, avert regional conflict, promote peace, and protect the security of our friends and allies.”
Meanwhile, other future Obama advisors, such as Larry Korb, raised concerns about the human and material costs of invading and occupying a heavily populated country in the Middle East and the risks of chaos and a lengthy counter-insurgency war.
And other top advisors to Senator Clinton – such as her husband’s former Secretary of State Madeleine Albright – confidently predicted that American military power could easily suppress any opposition to a U.S. takeover of Iraq. Such confidence in the ability of the United States to impose its will through force is reflected to this day in the strong support for President Bush’s troop surge among such Clinton advisors (and original invasion advocates) as Jack Keane, Kenneth Pollack, and Michael O’Hanlon. Perhaps that was one reason that, during the recent State of the Union address, when Bush proclaimed that the Iraqi surge was working, Clinton stood and cheered while Obama remained seated and silent.
These differences in the key circles of foreign policy specialists surrounding these two candidates are consistent with their diametrically opposed views in the lead-up to the war."
http://www.fpif.org/fpiftxt/4940