Thursday's presidential debate drew global attention and criticism, particularly aimed at Joe Biden's lackluster performance, an analysis by Politico details, with experts arguing that the implications are serious on the world stage. 

While Donald Trump maintained his typical provocative rhetoric, Biden's feebleness disappointed foreign diplomats and officials.

Concerns were voiced about whether either candidate demonstrated the vigor needed to lead a nuclear-armed superpower effectively.

International expectations had anticipated Trump's controversial statements but had hoped for a stronger showing from Biden.

"Enormous lies by Trump," one Western diplomat said. "On the other hand, at least we understood what he says. Maybe we are witnessing a turning point" for Biden.

Read more: Biden, Trump exchange blame, jabs in first Presidential debate

The debate covered ongoing global issues such as conflicts in Afghanistan, the war on Gaza, and tensions with Russia, which are crucial concerns for international observers.

Neither candidate significantly advanced new policy ideas during the debate, with Trump accusing Biden of potential missteps leading to global conflicts, and Biden criticizing Trump's international policies.

Observers noted Trump appeared more vigorous and coherent in his delivery compared to Biden, who was viewed as appearing tired and faltering.

The debate's impact on America's international image, especially ahead of Biden's hosting of NATO leaders, remains a topic of concern.

Despite diplomatic reservations about Trump's accuracy, some noted his clearer presentation style as potentially more effective in negotiations.

'I watched the Biden-Trump debate alone in a Lisbon hotel room, and it made me weep'

Earlier today, writer Thomas Friedman wrote for the New York Times that he felt deep disappointment and concern following the Biden-Trump debate. 

Friedman criticizes both candidates but reserves particular dismay for Joe Biden, whom he views as unfit for re-election despite acknowledging his personal goodness and previous accomplishments.

Conversely, he condemns Donald Trump as divisive and dishonest, believing he lacks the qualities necessary for American leadership in the 21st century.

Read more: Biden, Trump debate fact-checked over false claims, disinformation

Friedman calls for a drastic step from the Biden camp: to acknowledge Biden's shortcomings and withdraw from the race for the Democratic nomination.

He urges Democrats to initiate an open process to find a new, consensus candidate who can effectively challenge Trump in the upcoming election.

Friedman proposes a competitive selection process involving town halls, debates, and donor meetings, aiming to unite the party and present a compelling vision for America's future.