explain the difference between ensuring domestic tranquility and providing for a common defense

2 answers

http://www.google.com/search?q=domestic+tranquility&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

http://www.google.com/search?q=providing+for+a+common+defense&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

Let us know what you come up with, and someone here will be happy to comment on your ideas.
no answer