The presidential campaign made a swing through the city Thursday as both Vice President Joe Biden and GOP frontrunner Mitt Romney appeared at separate events in Manhattan.

Fresh off a five-state primary sweep, Mitt Romney was in town raising money. The presumptive Republican presidential nominee held a breakfast fundraiser at the Marriott hotel in Midtown.

Meanwhile, Vice President Joe Biden was at New York University, where he criticized the former Massachusetts governor and praised the president.

"If you are looking for a bumper sticker to sum up how President Obama has handled what we inherited its pretty simple. Osama bin Laden is dead and General Motors is alive," Biden said.

Biden told students that Romney is weak on international affairs and switches positions on matters like relations with Iran.

Romney has praised Obama for tougher sanctions against Iran, but promised a very different policy with ratcheted-up military pressure.

The vice president said Romney's comments were not only misinformed, but actually dangerous. Loose talk of war, the vice-president said, only drives up the cost of oil.

He doubted whether Romney would have done as Obama did when he launched the military raid that killed Osama bin Laden.

The vice president also said Romney could take steps back to Cold War-era policies if elected.

"Just a month ago, Governor Romney, called, and here again I quote, [said] 'Without question, our number one geopolitical foe is Russia,'" Biden said.

The Republican's candidate's advisors did not help matters Thursday when one used the expression "Soviet" instead of "Russian."

However, Romney's team said that Obama undermines allies. The president was caught last month telling a Russian leader that more flexibility in dealing with European missile defenses would come after the November elections.

Romney officials declined repeated requests to speak on camera, but adviser Dan Senor did respond in a phone interview.

"It is President Obama's track record that has sent a message to our friends and allies, be they in governments or be they in dissident movements, who want to stand with us, who want to lock arms with us, who are looking to American leadership, who are really left exposed and isolated," said Senor.

Biden's impact may have been diluted by an unintentionally off-color aside.

"Now is the time to heed the timeless advice from Teddy Roosevelt: ‘Speak softly and carry a big stick.’ I promise you, the president has a big stick," Biden said.