Pope Benedict XVI has disagreed with the Bush administration's policies, but only politely and indirectly. For example, Benedict has spoken in favor of the International Atomic Energy Agency, which is often at loggerheads with Bush administration foreign policy.
Similarly, Benedict's Vatican has taken a firm stance against global warming, even acquiring a carbon offset forest to make the Vatican the "first entirely carbon neutral sovereign state." He has called for greater international co-operation to fight ozone depletion, yet not overtly criticized White House foot-dragging in that area.
The gloves came off, however, regarding the war in Iraq. In a May 2003 interview, Ratzinger said, " There was not sufficient reasons to unleash a war in Iraq. To say nothing of the fact that, given the new weapons that make possible destructions that go beyond the combatant groups, today we should be asking ourselves if it is still licit to admit the very existence of a 'just war.'"