RENO, Nev. — Preparing for his first foreign travel as the unofficial Republican presidential nominee, Mitt Romney used a send-off speech before military veterans Tuesday to deliver a scathing indictment of President Obama's defense and foreign policies.

Tying the tepid economy at home to weakness abroad, Romney asserted that Obama's "policies have made it harder to recover from the deepest recession in 70 years, exposed the military to cuts that no one can justify (and) compromised our national-security secrets."

Obama also addressed the convention of the Veterans of Foreign Wars in Reno on Monday, winning a warm reception when he touted such achievements as the killing of Osama bin Laden.

Romney, who embarks Wednesday on a weeklong swing to England, Israel and Poland, acknowledged the tradition avoiding harsh partisan rhetoric while on foreign soil, but showed no such restraint Tuesday, scoring Obama repeatedly even as he offered few specifics about what he would do if elected.

Romney referred to massive military cuts set for January as part of a deficit-cutting package that automatically kicks in unless Congress acts.

"Don't bother trying to find a serious military rationale behind any of this, unless that rationale is wishful thinking," Romney said. "Strategy is not driving the president's massive defense cuts. In fact, his own secretary of defense warned that these reductions would be 'devastating.' And he's right."

Unspoken was the fact that Congress — not Obama — effectively put a gun to its own head on military spending, adopting the cuts on a bipartisan vote as a way to force a long-term resolution of the nation's debt in a deal last year. So far, that effort has been unavailing.

Romney also attacked the administration over recent leaks of national-security information, laying responsibility at the president's porch step and calling it "a national security crisis." The leaks include news of U.S. cyberattacks against Iran's nuclear program and details of an investigation into a Qaida bombing plot.

"This conduct is contemptible," Romney said. "It betrays our national interest. It compromises our men and women in the field. And it demands a full and prompt investigation, with explanation and consequence. ... The time for stonewalling is over. "

Romney quoted Sen. Dianne Feinstein, D-Calif., head of the Senate Intelligence Committee, who said Monday that some leaks have come from the White House, though she absolved Obama of wrongdoing.

Soon after the speech Feinstein issued a statement saying she regretted her choice of words and expressed unhappiness with Romney for quoting her remarks.

Obama and White House aides have denied releasing classified information to reporters, saying the published information came from elsewhere. But the attack on the administration's transparency was a bit of payback from Romney, who has come under repeated assault from the Obama campaign for his "secrecy" on everything from his personal finances to his foreign-policy plans to his running of the 2002 Winter Olympics.

White House press secretary Jay Carney dismissed Romney's speech as superficial and stinting on detail.

He told reporters Romney's address was "the polar opposite" of one Obama made as a candidate before the VFW four years ago, when he made "very specific promises" on areas such as Iraq, Afghanistan and the fight against terrorism.

"The president talks frequently about the challenges we face in Afghanistan, the challenges we face in Iraq, the challenge we face now in Syria and the broader Arab Spring, in Asia, the need to focus and rebalance our efforts toward Asia. I find those specifics lacking so far in what I've heard from the other side," Carney said.

Obama can point to several popular achievements, including the death of bin Laden, lopping off much of al-Qaida's leadership, ending the U.S. involvement in Iraq and winding down combat in Afghanistan.

Polls show Obama favored over his Republican rival when it comes to foreign policy and anti-terrorism, which denies Romney the traditional advantage Republicans have enjoyed on defense.