Siegel told CNBC's "Squawk Box" that the U.S. should create a rare earth minerals reserve as rising trade tensions threaten global supply chains.

China's rare earth exports fell 31% in September from August, customs data showed on Monday, the third straight month of declines. New controls that were introduced by China last week have threatened a trade truce with Washington and the three months of declines are expected to raise questions about its agreements with Europe and the U.

China says its rare earth export controls aren’t linked to Pakistan; calls reports on Pakistan-U.S. mineral ties unfounded.

Communist China’s move to restrict exports of valuable rare earth minerals has reignited the Trump Administration’s trade war with that country, as President Trump Friday announced 100 percent tariffs on all Chinese exports to America.

The Centre’s new stockpile plan is a recognition that in the emerging world order, control over rare earths will mean control over technology and security.

China called U.S. President Donald Trump's latest tariffs on Chinese goods hypocritical on Sunday and defended its curbs on exports of rare earth elements and equipment, but stopped short of imposing new levies on U.

“We should not miss the fundamental point on rare earths: China has crafted a policy that gives it the power to forbid any country on Earth from participating in the modern economy,” Dean Ball, who served as a senior advisor in the White House Office of Science and Technology Policy earlier this year, wrote on X on Saturday.

Australia’s richest person has increased her critical minerals footprint by taking a stake in St George Mining as part of a $72.5 million fundraising.