US leader Biden warns China and Russia, hedges on re-election plans

American President Joe Biden on Sunday issued forceful warnings to China and Russia, and expressed optimism over the US economic rebound. The US leader surprised many by hedging on whether he will seek re-election.

In a television interview with the CBS "60 Minutes" program, Biden went back on repeated assertions by the White House that he is sure to run in 2024.

Biden, who will be 80 in November, told interviewer Scott Pelley that re-election is his "intention."

"But is it a firm decision that I run again? That remains to be seen," he said.

"It's much too early," Biden said, calling himself "a great respecter of fate."

Surveying the state of the world's largest economy, Biden was optimistic.

He declared the Covid-19 pandemic in the United States "over" and predicted that his administration would tame inflation -- the main reason for his poor approval ratings and the reason Republicans believe they can take control of Congress in the upcoming November midterms.

"We're going to get control of inflation," he said.

Stern warning to Xi on Taiwan

In another surprise moment, Biden once again appeared to challenge decades of US policy on Taiwan with a vow that he would send troops to defend the self-ruled island if China tried to invade.

"Yes," he said, adding that American intervention would follow "an unprecedented attack" by Chinese military forces.

Under the US policy known as "strategic ambiguity," Washington recognises Chinese sovereignty but opposes any forceful attempt to end Taiwan's de facto self-rule. While Washington does arm Taiwan, there has never before been any clear promise of direct US military support.

The White House was quick to point out that Biden's latest remarks do not indicate a change.

After the interview, Taiwan's Ministry of Foreign Affairs expressed its "sincere gratitude" for Biden's support.

In another tough message to the United States' biggest economic and geopolitical rival, Biden said he had warned President Xi Jinping not to support Russia militarily in its invasion of Ukraine.

He said he told Xi that US and other foreign investment in China would be disrupted and to think otherwise would be "a gigantic mistake."

'Don't, don't, don't'  

Biden also said that if Russian President Vladimir Putin uses nuclear or other non-conventional weapons against Ukraine the US response will be "consequential".

When asked what he would tell Putin if the Russian leader was mulling such a move, he said: "Don't. Don't. Don't."

Biden praised the Ukrainians for their gritty fight against the Russian invasion and said "they're defeating Russia".

Asked how to define victory for Kyiv, he said "winning the war in Ukraine is to get Russia out of Ukraine completely."

But given the scale of human suffering and destruction inflicted in resisting the Russian onslaught, "it's awful hard to count that as winning," he added.

A lot more to give

Despite his poor ratings and polls showing Democrats likely to lose control of at least one chamber of Congress, Biden said he is upbeat.

Noting that employment is booming and the economy is strong, Biden said "we hope we can have, as they say, a soft landing."

On whether at his age he is physically and mentally able to continue in the grueling job, Biden said: "watch me."

Biden said he had "a lot more to give".