There was a great column in today's Seattle Post-Intelligencer. The author argued clearly, effectively and concisely that the invasion of Iraq and subsequent occupation violate international laws, such as agreements established during the Nuremburg Tribunals and the UN Charter. It's a great read.
If you're interested in reading about Karl Rove's apparent impropriety, the allegations and surrounding cover-up operation, I have linked some stories below.
A wonderful perspective from the Boston Globe can be found here.
Also, check out this comment from the Minneapolis Star Tribune.
The Christian Science Monitor has a poll associated with its account.
*update July 21st: The Washington post has a terrific new article re: plamegate.
I think both those of us on the left and on the right can agree that it's not good for our government to be involved in an illegal military operation! Would supporting (or even behaving neutrally towards) the government's illegal war put one in jeopardy of guilt by association? If you're a citizen, it is your duty to do what you reasonably can to oppose the government when it engages in illegal or harmful behavior!
You can sign a petition for impeachment at the Veterans for Peace website.