In addition to the severe sanctions that Joe Biden has promised, the White House says it's ready to deploy another economic weapon if Vladimir Putin goes ahead with his planned invasion of Ukraine.

That weapon, the Export Administration Regulations (EAR), allows the Biden administration to ban foreign and domestic companies from exporting products like high-tech semiconductors to Russia.

Many questions remain about how effective the rule would be at penalizing Russia. However, the U.S. has effectively deployed it in other circumstances — and administration officials promise it will be a key lever to cut off Russia.

Underneath the bureaucratic language, it's a “a big deal that Putin didn't expect,” Douglas Rediker, a nonresident senior fellow at the Brookings Institution, told Yahoo Finance.

"Russia would be cut off from all of the bones of the future development of artificial intelligence and, let's say, all of the technology that's likely to power the 21st century economy,” Rediker said. "[It's] the first time the U.S. has ever floated something like that [and] it doesn't actually require the EU to come along."

The rule laid out in U.S. government documents applies not just to American items but also claims “foreign-produced items located outside the United States are subject to the EAR when they are a ‘direct product’ of” industries like U.S. technology, software, or manufacturing.

Biden could very well put the rule to the test. The president said on Friday he believes Putin has “made the decision” to invade while also promising to “hold Russia accountable for its actions.”

‘We think we have an asymmetric advantage’

White House Deputy National Security Advisor Daleep Singh added details of the administration’s thinking Friday. Speaking of the overall strategy to reporters, he noted that “financial sanctions deny foreign capital to Russia, and export controls deny critical technological inputs that Russia needs to diversify its economy."

While Chinese companies would likely not be swayed, Singh noted: "We think we have an asymmetric advantage when it comes to the foundational technologies of our time. There really is no ability for Russia to replace or compensate for the denial of these inputs from anywhere else, including China.”

The White House also has to contend with the fact that chip manufacturing largely happens outside the U.S. The role of the U.S. in semiconductor manufacturing has fallen from nearly 40% in 1990 to 12% today, according to a recent report from the Semiconductor Industry Association. When it comes to the world’s most advanced semiconductors, 100% of them were manufactured overseas in 2019. Three-quarters of global chip manufacturing capacity is now concentrated in East Asia.