The government is actually here to promote "Domestic Tranquility, provide for the common defense & promote the general Welfare" of the population ...
They are not here to "spread democracy", "Invade countries" and "protect other countries citizens from getting ass-raped by dictator leaders"
If we worried as much about our own people than we worry about others we would have plenty of money to promote the "welfare" part of the constitution as well as the "common defense"