Actually it is $1.9t. And that is a figure announced yesterday.
https://www.thebalance.com/war-on-terror-facts-costs-timeline-3306300
Really?
Now a war of aggression is generally based upon either the desire to occupy the country for land or resources (which we did not), or because of religious-ethnic purposes.
Darfur is a war of aggression. The invasion of South Korea and South Vietnam was a war of aggression. "Regime change" is actually a good reason since it involves none of those.
Taking out Hitler, that was "regime change". As was Italy, Japan, Libya, Somalia, and many of the conflicts in former Yugoslavia. You remove the government in power, and put in a more peaceful one.
Now let me throw this into the mix. The government in Iraq in 2003 was illegal. Guilty of committing decades of war crimes and crimes against humanity. They took charge in a coup, deposing the legitimately elected government and running it as a police state for 40 years.
"Millions of lives"?
Wow, is that even close to the truth?
Even the most outlandish claims of the death toll (which includes the deaths by ISIS and by the radical groups) only comes to around 1.3 million. Much less when you only count those that died in fighting the United States (less than 100,000 for all combined in over 15 years).
I love how a terrorist slaughtering Christians in some remote village in Syria is somehow the fault of the United States.
You are ex US military and understandably might want to see things in a different light but there is just so much BS and assumption in the above it would take around 10 massive posts to even touch the surface, so just some bullet points .
Additionally , if you want to discuss something in particular in amongst the deluge above , even multiple ones in singular posts I'm happy to do so
1. Legality of Iraq invasion. Only the UNSC can authorize military action against any nation state for it to be legitimate/legal and there has to be a case for it. To invade a nation to induce regime change is flat out illegal. The UNSC resolutions pertaining to Iraq were concerned with disarmament , not regime change. For the UN to advocate such a thing would be against its own charter , which is a big part of what makes up international law anyway.
In international law the " aggressor " is understood to be the nation that sends its forces into the territory of another state first. Hence why the Germans were , rightly imo , classed as the aggressors for the carnage that was WW2. States usually justify their aggression with some reference to security , you missed that out of the small list of 2 reasons you think are relevant
2. The US isn't the only nation to wage wars of aggression though I would seriously , if I were you , read up on the situation WRT Vietnam and the US involvement there before you make any attempts at allocating crimes here.
3. Citing odious regimes in a debate concerning the act of regime change is expected when it comes to those wishing to defend nations that participate in it. People need to see past this in order to understand why the principle against it has such legal support. I'm sure a little time to stop and think should be sufficient but if not think along the lines of what the world would be like if nations decided to militarily attack other nations simply because they didn't like the current government/leaderships there.
4.At the time Saddam Husseins regime carried out , arguably , some of its worse crimes he enjoyed US support.
5. The US and other Western states have no problem supporting despotic regimes so long as they are considered useful to them. Past ones would include the Shahs Iran , Pinochets Chile , Duvaliers Haiti , Suhartos Indonesia ,Galtieris Argentina to name but a few, with many of the cited places having their democratic choices ground into the dust in a sea of blood. Present day ones would include Morsis Egypt , Saudi Arabia , the feudal monarchies of the Gulf states , some of the former Soviet Asian republics
6.Read what I actually wrote about the victims of these insane wars for geopolitical gain that make up the war on terror thus far. The charge that millions have been killed and/or had their lives destroyed is factually correct. Your mistake , probably deliberately , was to try to ignore/discount all of the people maimed , all of the people made homeless or made refugees in a neighbouring state. As these people are genuine and direct victims of the decisions made in Washington and London etc the real figure is in the tens of millions