Doug Krizner

trading.

At the same time, there was a sell-off today in Bitcoin.

It tumbled below 64,000 as an unwinding of leveraged bets deepened.

Bitcoin lost more than 12% during New York trading, and Nobel laureate Paul Krugman says Bitcoin is facing a real crisis of faith.

That is Nobel laureate Paul Krugman speaking on Bloomberg Businessweek Daily.

Bitcoin has wiped out all of its gains since President Trump's election set off a speculative rush into cryptocurrencies.

Now, Bitcoin's plunge has rocked the digital asset complex, and few companies are more exposed than the Bitcoin treasury company Strategy Inc.

Today, after the bell, the company confirmed a net loss of $12.4 billion for the fourth quarter.

Shares in Strategy Inc.

were down by more than 2% in late U.S.

trading, but these shares have lost 45% of their value so far this year.

The treaty limiting U.S.

and Russian deployment of the most dangerous nuclear weapons lapsed overnight, and President Trump is renewing calls for a stronger pact instead of extending the current agreement known as the New START Treaty.

Here is former Republican Congressman Patrick McHenry.

That's Patrick McHenry, former Republican congressman and Bloomberg News contributor.

Meantime, the U.S.

and Russia have agreed to restart high-level military contacts.

They were suspended shortly after the invasion of Ukraine.

Today, U.S.

Treasury Secretary Scott Besant testified before the Senate Banking Committee on financial oversight.