Is The American Left Intentionally Diminishing Our Role As The Leader Of The Free World?

Of course they are.
Think about this for just a moment.
The Middle East is about to become a vassal state of Russia/Syria/Iran on one side and Sunni/The Islamic State/Israel on another. What is the current administration's standing in all of this? Essentially letting Russia and Vladamir Putin prop up the Bashar al-Assad regime of terror, by extension allowing Iran to join in the fun and their vassal state within a state, Hezbollah (the state within the "borders" of Lebanon) trolling for enemies to their Shia branch of Islam.
And a seemingly unholy alliance of Israel, Egypt, Jordan, and yes, Saudi Arabia and even more perplexing but understandable, the Islamic state, all Sunni's except for Israel, obviously.
The result of this war has been a mass exodus of people from the region to Europe, well pretty much everywhere that will in one way or another take them.
This is just one way America is weakened in the world.
But is this all by design?
The reason I believe that it is the case is simple.
Defense spending, the most important and only constitutionally mandated duty of the federal government, takes a huge bulk of spending that the left would like to see spread out in other ways. The only way to cut defense spending is to curb our role in the world. Once that is done then more of the defense budget can be cut and funnelled into favored left-wing programs.
Do you remember growing up seeing something that went like this:

It will be a great day when the air force has to hold a bake sale to buy a bomber.

That was because of schools having to hold fundraisers for various things. In a perfect world, I could agree with that. But unlike the lefties that still today parade that around, I live in the real world. A world in which there are nations and radical ideologies that would love to destroy our way of life. Radical Islam does not care if we hold a bake sale for a bomber or spend more money on education. They have their own, perverse, ideas about education. Iran looks to us as some Great Satan. We have to be put in our place. And bye-bye to Israel.
But why? Why would we either outsource and or abdicate our role in the world?
Because at the end of the day, to complete the Europeanization of the United States, the defense forces, again the only constitutionally mandated entity called for in the constitution, must be gutted. And that includes the State department and the C. I. A  as well. Once all of that is done, the left will make a case to expand the welfare state beyond the wildest dreams of even 20 years ago.
So yes, the American left, led by the Dear Leader, President Obama himself, is trying desperately to lower our standing and prestige around the world. There is even a segment of the isolationist right that would welcome this, but for different reasons.
Once that is done, then the Great Society can ramp up in earnest.
The fact is that, like it or not, the United States is the only superpower in the world that is a responsible one. The other actors such as Red China and Russia  could go half-cocked over something most would find innocuous. Without a strong United States at home and abroad, can you imagine what would happen if things continue to deteriorate in such places as the Middle East?
It is all the more reason that the Republicans need to nominate someone who has a clue on how a responsible superpower is supposed to act.
Because we all know the Democrats and the left-wing will not allow an actual candidate that believes in what we call American Exceptionalism.
As long as the left continues to diminish our role around the world, it becomes clear that they do not care. And that is a tragedy for the United States.