Sir Keir Starmer has dismissed concerns about Joe Biden’s health after the US president mistakenly called Volodymyr Zelensky “President Putin”.
Mr Biden made the gaffe as he introduced the Ukrainian president at the closing ceremony of Nato’s 75th anniversary summit.
The Prime Minister, who earlier insisted the president was not senile and had been on “good form”, repeatedly insisted on Friday that he deserved “credit” for hosting the event in Washington DC.
Speaking at a press conference at the end of the summit, he said: “I would urge everyone to look at the substance of what’s been achieved over these two days.
“We have a bigger Nato, more countries, we have a stronger Nato. We have a real sense of resolve. The third of the council sessions was the session with President Zelensky, there in relation to Ukraine.
“It was a session that he described as a success because of the package coming out of it, and President Biden led through all of that. That is an incredible achievement of this council.
“And when we think of the global threats, that is the best possible outcome we could have had today, and so I think he deserves credit for that, as does the team [that] worked with him.”
‘Slips of the tongue happen’
Speaking to CNN in an interview aired on Friday, Sir Keir said he would not be drawn on whether Mr Biden should stand down.
“Obviously in America, it’s for the American people to decide who they want to be their president,” he said.
But he said he would raise the alarm if he had noticed the US president’s mental fitness in decline during their meetings.
Asked if he would pass on concerns, he said: “Of course. But I mean, I yesterday spent 45 minutes with the president...and he was in good form.”
Government sources said Mr Biden was sharp on foreign policy in the meeting, but that it had gone on longer than expected because he told several long anecdotes and jokes.
However, Sir Keir’s answers were less effusive than those of other world leaders.
Emmanuel Macron, the French president, said Mr Biden was “in charge” and “clear on the issues he knows well”.
“I saw him as always, a president who is in charge, clear on the issues he knows well,” he said.
“We all make slips of the tongue sometimes. It has happened to me before, it will probably happen to me tomorrow.
“I would ask you to show the same leniency that should be shown between caring people.”
Olaf Scholz, the German chancellor, also addressed the gaffes. He said: “Slips of the tongue happen, and if you always monitor everyone, you will find enough of them.”
Sir Keir had already been forced to deny Mr Biden was “senile” on Thursday amid speculation over Mr Biden’s cognitive ability.
‘Incredible leadership’
The new Prime Minister, who met his US counterpart for the first time on Wednesday, said the 81-year-old was “absolutely” mentally agile and was “across all the detail” during their hour-long meeting in Washington.
George Clooney, the Hollywood actor, earlier this week called on the US president to withdraw from the race for the White House. He said: “The one battle he cannot win is the fight against time”.
However, Sir Keir said the criticism was misguided and that Mr Biden had shown “incredible leadership” and was “on good form” during their Oval Office meeting.
Asked directly by the BBC whether the president was “senile”, Sir Keir said: “No, we had a really good bilateral yesterday, we were billed for 45 minutes, we went on for the best part of an hour, we went through a huge number of issues. At pace, he was actually on really good form.”
Pressed on whether Mr Biden was mentally agile, the Prime Minister said: “Absolutely, across all the detail.
“We were going up pace through a number of issues, which was really important to me because, obviously, it was my first opportunity to have a bilateral like that. And he showed incredible leadership.”