NEW YORK  — Donald Trump on Monday spent another day sequestered in cabinet-building talks as international suspense grew over who he will pick for secretary of state having already defied diplomatic protocol and provoked China.

The president-elect has so far named 12 members of his team - chiefly defense, health, treasury and commerce secretaries, attorney general, CIA director and ambassador to the United Nations - rolling out appointments well ahead of schedule compared to previous incoming US administrations.

He spends most of his time shut away in Trump Tower, his Manhattan skyscraper, requiring an unprecedented police presence in the heart of the city for which New York on Monday sent the US government a bill for US$35 million.

Vice president-elect Mike Pence told reporters that Monday’s meetings had resulted in decisions that would be made public in the days ahead.

"Another productive day on the transition," he said. "Looking forward to more announcements later this week and historic momentum of this transition will continue. We had decisions today that will be made public in the days ahead."

The world is keenly awaiting what will be Trump’s most prestigious appointment - America’s next top diplomat - scrutinizing the process for clues as to the direction US policy will take after the Republican is sworn in on January 20.

Names bandied about for weeks include former Trump critic Mitt Romney, onetime CIA director David Petraeus, former New York mayor Rudy Giuliani, Senate Foreign Relations Chairman Bob Corker or even former UN ambassador John Bolton.

Now added to a growing list of reported names are some with less experience, some with top drawer credentials and others thought to more closely represent Trump’s vision of an "America first" policy.

Among them are Exxon CEO Rex Tillerson, whom Trump meets Tuesday, Barack Obama’s former ambassador to China Jon Huntsman and California Congressman Dana Rohrabacher, who agrees with Trump’s call for closer ties with Russia.

Retired admiral James Stavridis, former NATO commander and current dean of The Fletcher School at Tufts University, is also scheduled to meet the 70-year-old billionaire on Thursday at the request of the transition team.

Provocative tweets 

Emphasising the uncertainty, outgoing Secretary of State John Kerry warned in Germany that "anxieties" are sweeping Western democracies given Trump’s campaign vows to rip up pacts such as the Iran nuclear deal.

Trump’s latest appointment was that of former rival and retired neurosurgeon Ben Carson as secretary of housing and urban development on Monday. The transition said additional cabinet selections are likely this week.

Trump has sent mixed signals to China, America’s largest trading partner. Beijing has already protested to Washington after Trump took a phone call with the authority leader of Taiwan - the first such call in around four decades.

The defiant president-elect followed up with a series of provocative tweets directed at Beijing on Sunday, accusing China of expansionism and of fiddling the exchange rate.

But China’s response to the tweet storm was muted, suggesting that Beijing may still be scrambling to work out what the outburst could mean for US relations.

On Tuesday, Trump is scheduled to meet Iowa Governor Terry Branstad, who has close ties to China’s president and is reportedly a candidate to become ambassador to Beijing.

China regards self-ruling Taiwan as part of its own territory awaiting reunification under Beijing’s rule, and any US move implying support for the island’s independence is gravely offensive to Beijing.  — AFP