Russia said on Friday it had finished calling up reservists to fight in Ukraine, having drafted hundreds of thousands in a month and sending more than a quarter of them already to the battlefield.

Russia has not yet notified the United States about exercises of its nuclear forces that Washington expects Moscow to carry out soon

"The President is disappointed by the shortsighted decision by OPEC+ to cut production quotas while the global economy is dealing with the continued negative impact of (Russian President Vladimir) Putin’s invasion of Ukraine," the White House said.

Washington has historically maintained a policy of "strategic ambiguity" on whether it would intervene militarily if Taiwan were attacked by China.

Antony Blinken reiterates US 'does not, and will never, recognize the legitimacy or outcome of these sham referenda'

Curbing the Islamic Republic’s nuclear ambitions has long been a priority in Washington. Tehran insists its nuclear efforts are solely for energy needs.

China has stepped up its presence across the Pacific Islands, pouring in infrastructure spending, ramping up official visits and training law enforcement.

Harris arrived in Japan on Monday and met Prime Minister Fumio Kishida ahead of Abe's funeral on Tuesday, which will be attended by hundreds of foreign dignitaries.

US Secretary of State Antony Blinken hosts foreign ministers for first meeting since deadly border clashes last week.

Each time Biden has raised the possibility of US troops fighting to protect Taiwan, China has reacted furiously.

The US president also dismissed the notion that the Chinese-Russian alliance effectively means the United States is fighting a new kind of Cold War.

Biden made the trip to highlight recent legislation passed at his behest setting aside $52 billion to boost US semiconductor production.