DANVILLE, Kentucky (AP) ― Vice President Joe Biden and the man who wants to succeed him, Republican Paul Ryan, clashed over the Obama administration’s policy in Libya and Iran in the opening minutes of the vice presidential debate, with Ryan citing it as evidence that it is weakening America’s standing in the world.

The stakes aren’t generally this high in vice presidential debates, but Biden was under pressure to undo some of the damage from President Barack Obama’s lackluster debate performance last week against the Republican candidate, Mitt Romney, and to restore energy to the Democratic campaign less than a month before the Nov. 6 election. 

Ryan, a congressman from Wisconsin who is a generation younger than his opponent, has to hold on to the Republicans’ sudden rise in the polls.

The two scrapped seconds into the debate, with Ryan saying the Sept. 11 death of the U.S. ambassador in an attack at the U.S. Consulate in Benghazi was evidence that the administration’s foreign policy was unraveling. “That’s a bunch of malarkey,” Biden retorted.

On Iran, Biden defended current sanctions as the toughest ones in history, while Ryan said President Barack Obama has allowed Iran to get four years closer to building a nuclear weapon, and accused the White House of not standing up for its ally Israel.

Unlike Biden, Ryan is not a foreign policy expert but stood his ground in territory that is more familiar to the veteran senator. The two also argued over the poor state of the U.S. economy, with Biden saying Republicans must take responsibility for obstructing the economic recovery.

The slow economy has been the dominant issue of the U.S. election, and Ryan cited high unemployment numbers as evidence that there is no economic recovery under way.

In turn, the pressure was on for Biden to go where Obama did not in his own debate.

He quickly did so, citing Romney’s opposition to the administration’s successful auto industry bailout, and noting that it was not surprising given the Republican’s recent videotaped comment in which he was heard saying that 47 percent of Americans view themselves as victims who depend on the government and refuse to take responsibility for their lives.

Biden is seeking to regain some of the ground lost after last week’s presidential debate, which erased Obama’s advantage and boosted Romney nationally and ― more importantly ― in such battleground states as Ohio. That is especially relevant as the U.S. president is not elected by a nationwide popular vote, but in a series of state-by-state contests.

About 41 states are seen as essentially already decided for Romney or Obama, leaving nine up for grabs, including Ohio. No Republican has ever won the White House without carrying that state.

The 90-minute debate ― the only vice presidential one, ― was moderated by Martha Raddatz, senior foreign affairs correspondent for ABC News.

Romney and Obama meet again Tuesday for a town hall-style debate in Hempstead, New York. Their third and last debate is scheduled Oct. 22 in Boca Raton, Florida.