Because DEMOCRACY - once established - keeps the enemy from having a hiding place from which to attack us.
It works like this. When a country has a leader hell bent on killing your citizens - and attacks them all over the world .. isn’t it better to get rid of that leader and help the citizens of his country have a better life .. and you gain an ally instead of an enemy ..??
If your only goal is DEFENSE .. you’re going to be sitting around waiting for the enemy to attack you .. I don’t think that’s a very good plan.
I agree with sealing the borders .. because as it is now, the terrorists are taking full advantage of the fact that they are so fluid.
However, it’s unrealistic to believe we can live in America and seal ourselves in and have no foreign relations at all .. that just totally will not and should not happen. We live on the same globe .. and we need to have allies and friends around the world. WWII could not have been won without the allies and friends around the world who helped.
To say that we could have a policy of “us four and no more” is totally irresponsible. That means we would have let Hitler ravage the world and we would not have lifted a finger ..?? We would have let Saddam continue to kill our soldiers all over the world by blowing them up .. and we would not lift a finger to stop it.
Do you really think that would have been a good plan ..??
Our nation is a REPUBLIC, not a democracy. The latter is not a stable for of government. When you read the Constitution, you will also find out that one the responsibilities of the fedgov is to ensure that the States have a republican form of government, not a democratic one (& I'm not referring to political parties, either). The Founding Fathers opposed democracy, & James Madison criticized it in paper #5 of The Federalist Papers. On the other hand, if you read The Communist Manifesto, you will read that an important goal of Karl Marx was to make the world "safe for democracy".
Where did you get that silly idea that I would like to "...seal ourselves in and have no foreign relations at all"? ROTFLMAO! Read paper #45 of The Federalist Papers & you will learn that our relations w/ foreign governments are among the 1st & foremost responsibilities of the fedgov, for cryin' out loud! What was that Thomas Jefferson phrase, I don't remember it exactly: "friendship & trade w/ ALL nations, entangling alliances w/ NONE"?