Acountry whose government underwent a massive change due to a military conflict there, beginning in 2003?

The answer is Iraq. The United States declared war on Iraq and launched the Second Gulf War.  Unlike the previous war, this was very different as Iraqi fighters made the U.S. fight every inch of the way until they were able to capture Saddam and take control of the country.

answer; regard the action of other people negatively;

answer; silence;