It was basically the entire world against Iraq. Even countries like Afghanistan and Sierra Leone contributed to the coalition forces against Iraq, because invading your neighbors to steal resources is frowned upon by essentially everyone.
The only reason this hasn't happened again with Russia is because Russia has nukes to threaten the world with, and cheap oil and gas to sell. And even then, mutually assured destruction greatly diminishes that nuclear threat.
We are talking about different things. The political/military support for the invasion in Irak from various governments was so limited, and also criticized domestically, that it became a meme ("You forgot Poland").
Now, as for the people themselves, there were huge protests against the war in Iraq in Europe and even greater against the war in Afghanistan, with literally millions marching in some European cities - it was clear to most people in the West how pointless it is.
It was basically the entire world against Iraq. Even countries like Afghanistan and Sierra Leone contributed to the coalition forces against Iraq, because invading your neighbors to steal resources is frowned upon by essentially everyone.
The only reason this hasn't happened again with Russia is because Russia has nukes to threaten the world with, and cheap oil and gas to sell. And even then, mutually assured destruction greatly diminishes that nuclear threat.