Moment reporters frantically search for checked out Biden as lame duck president misses photo with G20 leaders: 'He's behind the palm tree!'

Reporters could be heard calling out for President Joe Biden as world leaders at the G20 Summit in Rio de Janeiro gathered for a final photo, but the 81-year-old leader was a no-show. 

Biden was nowhere to be seen until moments after the picture was taken when photographers and reporters frantically searched for the leader of the free world until one cameraman spotted him behind a nearby palm tree. 

In footage shot by CSPAN there appeared to be utter confusion as dignitaries were unsure whether to leave the risers erected for the photo or to stay put and wait for Biden to return. 

As the photo was being taken CSPAN's camera coverage of the event picked up staffers saying, 'Where is Biden? They are telling them to wait for Biden.' 

'Guys! Oh my God!' a female reporter could be heard saying off camera. 

'They took it! He's right there - behind the palm tree right now!' the unnamed woman said, incredulous that Biden had missed the iconic shoot.   

Biden has been making a last pitch for global support on issues from Ukraine and Gaza to climate change before Donald Trump returns to the White House.

But instead of the US president, it was China's Xi Jinping, India's Narendra Modi and Brazil's Luiz Inacio Lula da Silva who joked and chatted in the front row before posing together.

The leader chatted and joked as they gathered to pose against the backdrop of Rio's iconic Sugarloaf Mountain. The shoot was over in a second. 

Frustrated American officials blamed it on 'logistical issues' and said the picture was taken too soon, as Biden was still making his way to the area from talks with Canadian Prime Minister Justin Trudeau.

By the time Biden decided to make his way over to join the photo shoot, it was all over and the risers, moments earlier full of his counterparts were emptying set beside the Brazilian city's stunning bayside

Trudeau and Italian Prime Minister Giorgia Meloni also missed out as they were huddling with Biden at the time nearby. 

'They took the photo early before all the leaders had arrived. So a number of the leaders weren't actually there,' a US official told the press pool immediately after the snap was taken.  

But while the issue did not appear to have been a deliberate snub, it reflected the increasingly sidelined status of the lame-duck leader as Trump's comeback looms.

The fact that it was the leaders of three BRICS countries in the front row that see themselves as a counterpart to a Western-dominated world did not help.

US officials denied that Biden missed the photo -- officially for Brazilian President Luiz Inacio Lula da Silva's launch of an alliance to curb world hunger -- to avoid appearing alongside Russia's Foreign Minister Sergei Lavrov.

Biden had earlier urged the G20 leaders to support Ukraine's "sovereignty" in the face of Russia's 2022 invasion.

In another incident, US officials played down footage of the leader of the world's biggest economy and most powerful military apparently straying from the red carpet on the way into the summit.

The US officials said that 'several' leaders from 'countries that face high threats' took a different route like Biden did, even if Brazilian media said they did not see any others.

However, the missteps come in the twilight of a presidency whose achievements are set to meet a Trump-shaped wrecking ball come January 20 next year.

Biden dropped out of the presidential election against Trump after a disastrous debate raised concerns about his age, but he still saw his Democratic replacement, Kamala Harris, lose heavily to the Republican.

Now his six-day tour of South America has turned into a desperate frenzy to reassure world leaders amid uncertainty about what Trump will bring, from trade wars to threats to upending old alliances.

At the G20 on Monday, Biden had urged the other leaders to back Ukraine's 'sovereignty,' in his first comments since it emerged on Sunday that he had approved Kyiv's use of long-range missiles against Russia.

Yet Trump could reverse not only that decision, but also Biden's huge US military aid for Ukraine, with signs that the president-elect may push through a peace deal that could force Kyiv to cede territory to Moscow.

Biden also pushed G20 leaders to pressure Hamas on a ceasefire deal with Israel -- and while Trump has appointed some key Israel hawks, he may also try to push for a historic deal there too.

Time and again, Biden has used his valedictory appearance on the world stage to try to keep his policies out of Trump's shadow.

At the Asia-Pacific Economic Cooperation (APEC) summit in Lima last week, Biden met with Xi, who promised to work with Trump on a 'smooth' transition even as both leaders warned of turbulence ahead.

On Sunday, Biden visited the Amazon rainforest in Brazil to promote his record on climate change - despite Trump threatening to pull the United States back out of the Paris climate agreement.

At the G20 he announced what the White House called a 'historic' $4 billion pledge for a World Bank fund that helps the world's poorest countries.

But US officials admitted that there was no way they could 'Trump-proof' the money if Trump - who has appointed tech tycoon Elon Musk to head a commission on cutting government 'waste' - scraps the plan.