This post is mainly for those that support our expansionist wars, but all comments are welcome.
Let's say there is a country called Libertania. They have built a  prosperous society based on deregulation, sound money, great private  health care, no welfare, and a very limited central government who is  there to defend its borders and settle disputes between citizens who  believe that another citizen has violated his rights. Essentially, we're  talking about the libertarian utopia.
After a while, the people of this country come to two conclusions:
The  first conclusion is that it is so wildly successful that other  countries must implement this sort of government in order to escape  tyranny and oppression from their rulers.
The second  conclusion is that it sees that some of the larger countries in the  world are a threat to this country because they depend on these  countries for resources that they don't have.
So in the  interest of spreading liberty and protecting the supply of foreign  resources that they need, Libertania forms a massive military machine  and decides its first target is The United States of America. Based on  the potential military threat, they try to get the US Government to  stand down and offer Libertanian style freedoms to its people. The US  Government refuses to budge.
Let's lay aside the  apparent contradiction of a libertarian nation using force against  another nation for a moment, after all, it takes flawed people to run a  government.
So, Libertania decides to invade America.  They start by executing a bombing campaign on Washington, DC. They  expand that by taking out state capitals as well in order to cripple the  government and get them to give up their oppressive regulatory and tax  schemes and unjust imprisonment of hundreds of thousands of people who  are locked up as political prisoners in war on drugs.
The  goal of the  Libertanian invasion is primarily to secure the best  interests of the American people which is a life free from burdensome  and intrusive government with the secondary goal, if the invasion is  successful, to have a resource rich, liberty minded trading partner by  which it can secure vital national resources.
Now we get to the question: Would you support such an invasion of America based on those goals?
Secondary  question: Would you be willing to dismiss the collateral damage of  friends, family and colleagues killed in the bombing since it was for  your own good in the name of liberty?