WASHINGTON — Two years ago the departing chairman of the Joint Chiefs of Staff, Adm. Mike Mullen, declared that “the most significant threat to our national security is our debt.” After a decade in which the nation had chased Al Qaeda and invaded Iraq, Admiral Mullen was saying, in essence, that the biggest enemy was us.
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Now that Congress and President Obama have slipped past the latest budget deadline with a bill that does little to address the country’s long-term debt issues — and by some measures might worsen them — the worries of the national security establishment have been reignited. Most pointedly, military and diplomatic experts wonder whether the United States is at risk of squandering its global influence.
“There’s a sense that we’ve been playing roulette with our position, and this deal does nothing to stop that,” Richard N. Haass, the president of Council on Foreign Relations, said in an interview. His coming book, “Foreign Policy Begins at Home,” is part of a wave of recent literature arguing that America’s reduced global ambitions are linked to its status as a debtor nation.
Vali Nasr, who will soon publish “The Dispensable Nation,” argues that the debt, among other economic woes, has allowed Mr. Obama and other Democrats to justify a retreat from global engagement. “It’s made it far easier to say ‘We can’t do more,’ ” said Mr. Nasr, the dean of the School of Advanced International Studies at Johns Hopkins University. “And without addressing the debt issues, it will be easier to make that argument for years to come.”
A departing senior diplomat at the State Department who requested anonymity, ruminating on the outcome of the confrontation on the fiscal crisis, said that the failure to attack the long-term debt issues would become another reason “to turn our backs on the Middle East and trim our sails on the new focus on Asia.”
That is the theme that the Chinese — who have an interest in portraying the United States as a declining power unable to manage its economy — are already promoting. “The politicians have chosen to kick the can down the road,” the state-run Xinhua news agency said in a commentary on Wednesday. “The can will never disappear,” it continued, warning that the United States was falling “into an abyss you can never come out of.”
Most evidence suggests that the country’s debt is not an immediate crisis. The deficit is expected to shrink somewhat in coming years, and even after the United States lost its AAA bond rating, foreigners have remained willing to lend the country money at very low interest rates. That is a sign of confidence in the American economy and a recognition that Europe and Asia have problems of their own.
But the aging of the population and the growth of health costs will most likely cause the deficit to grow rapidly in coming decades, meaning that the most difficult choices about taxes and spending are still ahead. Absent decisions on those issues, the government will have fewer resources and be more dependent on foreign lenders — increasingly the Chinese.
“Partly it is about resources,” Mr. Haass said, referring to the national security implications of the deficit. “But it is also about reducing your vulnerability to the machinations of currency markets and potentially hostile central bankers” who choose whether to buy American debt.
“When we appear to be dysfunctional, as we have in recent times, it makes it hard to be the model for the democratic, capitalistic model we say we want to be in the world,” he added.
History suggests that the relationship between debt and American power is a complex one, subject to differing interpretations by both economists and historians. The federal debt exceeded 100 percent of the gross domestic product at the end of World War II, but the postwar period nonetheless marked the beginning of America’s superpower status. The debt fell fairly steadily during the cold war, and it was cut to about a third of gross domestic product by the end of the Nixon administration — even as the country retreated into a post-Vietnam War funk.