In peace prepare for war, in war prepare for peace. The art of war is of vital importance to the state. It is a matter of life and death, a road either to safety or to ruin. Hence under no circumstances can it be neglected.
SUN TZU
After the Holy Bible, I consider Sun Tzu's The Art of War to be essential reading. The wisdom in that book is simple yet profound. I read from it often and have made it a basis for many of my strategies in life. This particular quotation contains the peace through strength strategy in a nutshell. Peace is not a given. You must gain peace through strength. Conversely, weakness is provocation. Recent history bears me out on this.
Isolationism is the naive belief that other countries and foreign actors will leave you alone if you leave them alone and mind your own business. This is the utopian pipe dream of those with a libertarian political bent. I wish it could be this way, but it isn't. You have to give other countries and foreign actors the incentive to leave you alone. This is why a country must maintain a robust and constant national defense.
President Thomas Jefferson learned this lesson with the Barbary Pirates. I think of Jefferson as the most libertarian of the Founding Fathers with his "entangling alliances with none" quotation. Unfortunately, reality demanded that Jefferson create the US Navy and the US Marine Corps to go kick Barbary butt. Those Barbary pirates believed they had a positive duty from the Koran to attack American ships and enslave their crews. They were never going to mind their own business.
The War of 1812 also showed that isolationism was never going to be as the Brits decided to try kicking American butt again. Weakness was provocation, and the USA had to fight once again to remain free. This has been the state of affairs ever since. By World War I, Americans were weary of fighting and dying in foreign wars. This led to a resurgence of isolationist feelings at home. Pearl Harbor would end that.
Some believe that FDR knew Pearl Harbor was coming and sat on his hands and let it happen to sway hearts and minds into battle. I think the mere planning of such an attack was enough to justify going to war with Japan and with Nazi Germany, Japan's ally. No leader should ever let such an attack happen if it can be prevented. The only prevention for such attacks is to be prepared for them.
The famous line goes that eternal vigilance is the price of liberty. It is sometimes credited to Thomas Jefferson, but it may as well have come from Sun Tzu. We are free only because of the job our men and women in uniform do for us each day.
If isolationism is the error of libertarians, imperialism is the error of those who lean left in their politics. By nature, Marxists and progressives cannot allow liberty which is why they support an ever expanding state of tyranny. This tyranny does not end at a country's borders but will spill over into other countries. This was certainly the case with the USSR and Communist China. The neoconservatives here at home were former progressives who decided that war was a good thing especially if it was an imperial war of conquest. The ultimate goal of this imperialism is the establishment of a one world global government. This is the utopian delusion of the left wing. Neoconservatives are just progressives masquerading as conservatives.
Neoconservatives proved their stupidity by invading Iraq after 9/11. That was a stupid, senseless, and unnecessary war. We can debate Vietnam and Korea because of the Soviet menace, but Iraq was war purely for the sake of war and conquest. We lost a lot of lives over there. What did we achieve?
The neocons will claim that containment doesn't work except that it does. The USA contained the USSR for the entirety of the Cold War. Peace through strength won the Cold War. This will never be enough for imperialist warmongers. They intend to rule over others no matter what. This is why someone wrote, "An evil enemy will burn his own nation to the ground to rule over the ashes." This quotation is attributed to Sun Tzu, but it doesn't appear in the Art of War. I believe Sun Tzu would agree with it.
Neoconservatives want forever war. For them, peace comes not from containment but from total subjugation of the enemy. They cannot and will not say no to war. These people are insane.
It is difficult to thread the needle between isolationism and imperialism. This is the cross of being a conservative. We do not have the luxury of arguing for a utopian position. We have to argue using facts and reality. The facts and reality show that isolationism and imperialism do not work. What does work is eternal vigilance. I hope we never forget this. History shows that we will.