security mom
n. A woman with children who believes the most important issue of the day is national security, particularly the fight against terrorism.
Examples
2004
Douglas Brinkley, a historian at the University of New Orleans and the author of "Tour of Duty: John Kerry and the Vietnam War," argues that the Clinton years, in retrospect, were an aberration, not the dawn of a new era.

"In 2004, it's the perfect time for that American tradition of waving the bloody shirt to come into our political discourse again," he said. "The soccer moms of the 1990's have become the security moms of 2004."
—Robin Toner, “Still the Question: What Did You Do in the War?,” The New York Times, February 15, 2004
2003
The conventional wisdom, fed by shrewd Republican operatives and commentators, is that Democrats, so out there in their antipathy for Bush, will push their party into an extremist wonderland and lose white men, security moms and anybody else who does not share their desire for revenge.
—“Democrats and 2004,” Chattanooga Times Free Press, December 31, 2003
2003 (earliest)
To date, the American people only know that Saddam Hussein is a brutal dictator who has used weapons of mass destruction against his own people and that he is a man that invaded Kuwait and we expelled him. They are unsure as to whether or not he is an imminent threat; that is, a threat to those security moms, not soccer moms, who are in their living rooms and worried about the health of their children and the safety of their home.
—Joseph Biden, “Remarks on the Senate floor,” Federal News Service, January 28, 2003