Leaving Europe, Biden says he feels good about trip

President Joe Biden is expressing regret for some sharp words to a reporter who questioned him about success of his summit with Vlimir Putin.

initial exchange came at press conference after Biden's meeting with Putin in Geneva on Wednesday.

When a reporter asked Biden how he could consider summit a success when Putin came out of it still denying responsibility for cyberattacks or or alleged wrongdoing, Biden shot back, "If you can't understand that you're in wrong business."

But Biden came over to reporters at his next step shortly after that, before getting on Air Force One.

Biden told reporters he h been a "wise guy" in his answer, and expressed regret for having been "short."

Biden also spoke positively again about summit and his meetings with allies on weeklong trip, which was meant in part to show U.S. engaging again after President Donald Trump's withdrawal from U.S. allies.

"I think we, country, has put a different face on where we've been and where we're going" Biden told reporters before getting on Air Force One.