Answer:
provide for the common defence,
Explanation:
The United States Constitution's preamble stated that "We the People of the United States, to form a more perfect Union, establish Justice, insure domestic Tranquility, PROVIDE FOR THE COMMON DEFENSE, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America."
"To provide for common defense" implies that the U.S government has the right to defend the country against a foreign attack.