You might be right. Are you willing to change your mind if the facts warrant?
We have to be careful when we make sweeping statements like yours. There might be a problem with linguistically limiting your claim to ‘unjust.’
Popes, if we take only the last century, have continued to press for peace of a kind unfamiliar to supporters of the War on Terror.
There is rather a long a history of them doing so.
Off the top of my head, in 1965 Paul VI even cried out, “War no more, war never again!”
On the immediate fate the then-looming war in Iraq, Pope John Paul II The Great said, “When war, as in these days in Iraq, threatens the fate of humanity, it is ever more urgent to proclaim, with a strong and decisive voice, that only peace is the road to follow to construct a more just and united society. Violence and arms can never resolve the problems of man.”
Do either men use the trigger word ‘unjust?’ No. However, the above statements go pretty well against your post’s import.
In an interview with an Italian news agency, then Cardinal Ratzinger stated the war “has no moral justification” and “[d]ecisions like this should be made by the community of nations, by the UN, and not by an individual power.”
Cardinal Ratzinger also said “There were not sufficient reasons to unleash a war against 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’.”
And he made this statement many times: “the concept of preventive war does not appear in The Catechism of the Catholic Church.”
Supporters of the War on Terror, and linking Iraq to it, usually won’t argue whether JP2 and B16 were against the war. It is fairly obvious Rome’s Bishops found President Bush’s policies lacking.
Those who disagree with the pontiffs will generally make points about whether or not pontifical statements about the war are binding on lay Catholics in the United States.
Bush supporters have chosen to ignore papal warnings in favor of political allegiance.