WaPo:

The U.S. defense budget is about 43 percent of the world’s total military spending — more than the combined defense spending of the next 17 nations, many of which are U.S. allies. Are Republicans really going to warn voters that America will be imperiled if the defense budget is cut 8 percent from projections over the next decade? In 2017, defense spending would still be more than that of the next 10 countries combined.

Do Republicans think it is premature to withdraw as many as 7,000 troops from Europe two decades after the Soviet Union’s death? About 73,000 will remain, most of them in prosperous, pacific, largely unarmed and utterly unthreatened Germany. Why do so many remain?

Since 2001, the United States has waged war in three nations, and some Republicans appear ready to bring the total to five, adding Iran and Syria. (The Weekly Standard, of neoconservative bent, regrets that Obama “is reluctant to intervene to oust Iran’s closest ally, Syrian President Bashar al-Assad.”) GOP critics say that Obama’s proposed defense cuts will limit America’s ability to engage in troop-intensive nation-building. Most Americans probably say: Good.

As the economy seems, for now, not the best line of attack for the GOP, it's turning to family values and saber rattling. Both of these lines, however, may not be efficacious. As George Will points out, saber rattling is useless at this time because the military is already huge, expensive, and in the middle of a long and unpopular war, and recently ended another long and unpopular war. As for the family values thing, Kellie Ferguson makes this point:
“I think this week’s outrage over the Komen decision should be a warning to the Republican party about how quickly there was a mass outrage over further and further attacks on general women’s health,” Kellie Ferguson, executive director of Republican Majority for choice... “You could see the same backlash on attacks on contraception.”
So, what's left for the GOP to attack?