Big Government that is not enumerated in the Constitution - and that includes abusing the U.S. armed services in the pursuit of being the world's policeman - is NOT conservative.
Irrespective of the state of the U.S. economy, the U.S. should NOT be a global policeman. To do so is to show disrespect for the lives of the men and women in our armed services as well as for the taxpayers who must - at gunpoint - pay for foreign interventions through taxes. To do is to agree with left-wing establishment statists like Wilson and both Roosevelts.
The purpose of the armed services is to provide for a common defense of the United States against enemies foreign and domestic. Not other random people around the world who neither have ties nor bear allegiance to the United States. Got it?
Until the current administration, The United States has stood by her allies. Got it?