Do you believe that our national security has become weakened due to the wars being carried out overseas?

I believe the question relates to wars being carried out by USA.

It is not possible to assess with certainty the effect of this kinds of war by USA or by any other country, where the the objective of the war is not to protect the country from some direct and immediate security or other threats.

This assessment is particularly difficult before the war is taken up, though these may become clearer as the war progresses. This is because the course and consequences of such actions do not always follow the predicted path, and because the objectives sought to be achieved are direct rather than indirect.

However, one thing is clear that a country initially takes up such action only to protect its interest and to strengthen its position. In the end whether its objectives are achieved or not is quite another matter.

Considering all these factors into consideration, It appears to me that overseas actions of USA in countries like Korea, Vietnam, Kuwait, Afghanistan and Iraq may not have been fully realized, but most certainly these have not weakened the country. It appears to me that these wars have actually helped to established the position of USA as the undisputed top military power in the world. And most certainly these wars have not affected adversely the national security.