Kamala Harris and Donald Trump shook hands at the 9/11 memorial in New York to mark the anniversary of the attacks, briefly putting politics aside.
Hours before, the two clashed in a fierce presidential debate.
The solemn show of unity was a stark contrast to the scenes earlier, when the vice president forced the former president to go on the defensive in front of tens of millions of onlookers.
Any sense of harmony from the commemoration of the 2001 al-Qaida attacks is likely to be short-lived. With just two months to go before the election, polls show Harris has won the key debate.
Trump, 78, later announced that the Philadelphia debate had been "rigged" against him.
Trump later appeared to dismiss the Harris campaign's call for a second debate, comparing the 59-year-old vice president to "a defeated boxer asking for another chance," CNN reported.
"Why give a rematch?", Trump wrote on social media. | BGNES
