Washington (AFP) - Joe Biden sought to reset his presidency in a marathon press conference Wednesday, vowing to reconnect with voters in his second year and touting what he said were his unprecedented successes, but stumbling during an answer on the Ukraine crisis.

"Can you think of any other president that's done as much in one year?" Biden asked, ticking off the epic struggle against Covid-19 and trillions of dollars in government funding to save the US economy from pandemic fallout.

"I don't think there's been much on any incoming president's plate that's been a bigger menu than the plate I had given to me," the Democrat said. "The fact of the matter is, we got a lot done."

Speaking on the eve of the anniversary of his inauguration on January 20, 2021, Biden held only the second White House press conference of his presidency -- then surprised many by taking questions for almost two full hours.

At various times combative, joking and meandering into thoughtful musings on everything from the workings of Vladimir Putin's mind to Republican opponents, Biden brushed off criticism over his handling of the pandemic and soaring inflation.

Asked about his approval ratings, which have sunk into the low 40 percent area, Biden was curt.

"I don't believe the polls," he said.

Biden did acknowledge missteps in the 12 months since he took over from Donald Trump, saying it had been "a year of challenges."

These included that he "didn't anticipate" the ferocity of Republican obstruction to his agenda in Congress. On Covid testing capabilities, which continue to struggle to meet demand, he said "we should have done it quicker."

Biden likewise said he understood "frustration" over steadily rising prices, which he blamed on Covid-related supply chain issues.

Fighting inflation will be "hard and take a lot of work."

"It's going to be painful for a lot of people," he said, noting that high prices were being felt "at the gas pump, the grocery stores and elsewhere."

Ukraine confusion

On one of the most traumatic episodes of his presidency -- the chaotic and rushed final withdrawal from the 20-year long Afghanistan war -- Biden said flatly: "I make no apologies."

"There was no way to get out of Afghanistan after 29 years easily," he declared.

The press conference, which defied the widely shared image of Biden as shrinking from contact with the media, focused especially heavily on the looming crisis in Ukraine, where the United States is leading Western efforts to find a diplomatic solution to Russia's military posturing on the border.

Biden said he was ready to meet with Putin and bluntly warned the Kremlin leader that an attack on Ukraine would be "a disaster" for Russia.

However, Biden caused confusion when he appeared to suggest that a small-scale attack by the Russians would prompt much less pushback from the West. The White House quickly issued a statement clarifying that what he meant was that any military invasion would prompt a "severe" response, while non-military aggression, like paramilitary attacks, would be met with a "reciprocal" response.

'Getting out'

With a State of the Union speech to Congress set for March 1, Biden faces a rapidly diminishing period in which he can engineer a strategy to fight off a Republican comeback at midterm congressional elections this November.

Republicans are forecast to crush his party and take control of the legislature. That risks bringing two years of complete obstruction from Congress, likely including threats of impeachment and a slew of aggressive committee probes. 

Trump, who continues to perpetuate the lie that he beat Biden in 2020 and seeks to undermine Americans' faith in their election system, is eyeing a possible attempt at another run at the White House in 2024.

Biden confirmed he wants to run for reelection with Kamala Harris as his vice president again. And he said that while Democrats proved unable to use their razor-thin congressional majority to pass two big priorities -- the Build Back Better social spending bill and election law reforms -- they could instead settle for passing "big chunks" of the failed legislation.

Above all, Biden emphasized his desire to leave the confines of the White House after a year featuring a decidedly light travel schedule.

"Number one: I am getting out of this place more often. I am going to go out and talk to the public," he said.

"I find myself in a situation where I don't get a chance to look people in the eye, both because of Covid and the situation in Washington," he said, describing how he wanted to "connect with people, let them take a measure of my sincerity."