President Trump pledged on Sunday to help Chinese telecom giant ZTE return to business, days after the company said it would cease “major operating activities” because of the U.S. government’s recent trade restrictions, a stunning shift in tone for a president who has long accused China of stealing U.S. jobs.

“President Xi of China, and I, are working together to give massive Chinese phone company, ZTE, a way to get back into business, fast,” Trump tweeted. “Too many jobs in China lost. Commerce Department has been instructed to get it done!”

The comment could presage a reversal of one of the Trump administration’s toughest actions to date against a Chinese company. In April, the Commerce Department penalized ZTE for violating a settlement with the U.S. government over illegal shipments to Iran and North Korea. As a result, the Trump administration barred U.S. firms for seven years from exporting critical microchips and other parts to ZTE, the world’s fourth-largest smartphone manufacturer.

[Nothing is certain about Trump’s trade policy other than the uncertainty]

Lacking those components, ZTE halted operations, stressing in a statement Wednesday that it is “actively communicating with the relevant U.S. government departments in order to facilitate the modification or reversal” of the Commerce Department’s order.

Trump’s tweet comes just days before U.S. officials are planning to meet with Liu He, one of Chinese President Xi Jinping’s closest advisers, to discuss the strained trade ties. That meeting is expected to be held in Washington this week or next. Trump’s new willingness to try to save ZTE also marks a sharp reversal from current U.S. policy, which had sought to punish the firm for repeatedly failing to make changes in the face of U.S. sanctions. The Treasury Department and the Commerce Department had been strongly aligned against ZTE as recently as several days ago.

It’s highly unusual for a president to personally intervene in a regulatory matter and could undercut the leverage of Treasury and Commerce officials seeking to enforce sanctions and trade rules. It could send the signal to foreign leaders that anything can be put on the bargaining table as Trump seeks to cut trade deals.

ZTE’s business in the United States has also raised concerns among national security officials. Shortly after Trump’s tweet, Rep. Adam Schiff (D-Calif.) responded, “Our intelligence agencies have warned that ZTE technology and phones pose a major cyber security threat. You should care more about our national security than Chinese jobs.”

Meanwhile, Trump is trying to broker a historic agreement with North Korea in an attempt to denuclearize the Korean Peninsula. The president has said that his economic approach to China is linked to his national security strategy, and China plays an integral part in any decision made by North Korean leader Kim Jong Un.

The White House did not immediately respond to a request for comment, nor did a spokesman for the Commerce Department. A ZTE spokesman also did not respond to an email seeking comment.

Nevertheless, trade tensions between the United States and China remain sky high. Trump has proposed tariffs on as much as $60 billion in Chinese goods, and Beijing has responded in kind, prompting only continued threats from the president, who repeatedly lamented the trade deficit between the two countries during the 2016 presidential campaign.

Recently, though, the Trump administration also has sought to limit the encroachment of Chinese telecommunications firms in the United States. The Defense Department in April ordered military exchanges to cease selling ZTE phones on U.S. bases. And the Federal Communications Commission recently moved toward prohibiting U.S. Internet providers that receive federal funds from spending them on equipment made by companies such as Huawei, another major Chinese telecom player.

The U.S. government initially penalized ZTE in 2017, requiring it to pay $1.19 billion to settle charges that it violated U.S. sanctions in selling equipment to Iran and North Korea. As part of the settlement, ZTE also was required to punish employees involved in the matter and tighten its internal monitoring.

But U.S. officials said this year that ZTE didn’t discipline all the employees involved in the violations. “This egregious behavior cannot be ignored,” Commerce Secretary Wilbur Ross said in April.

Trump’s international economic policies have been marked by ultimatums and threats that are frequently followed by exemptions and reversals. Foreign leaders often do not know whether he will follow through on something he vows to do or whether he will back down.

For example, he has said that he would impose tariffs on steel and aluminum imports, but he has temporarily exempted Canada, Mexico, the European Union and several other countries while leaving China and Japan searching for answers.

His advisers have launched official or unofficial trade discussions with numerous countries, and these talks are wrapped in uncertainty because it is unclear whether Trump will follow through on promises to impose tariffs, even if they might raise prices for U.S. consumers.

But nowhere is the United States’ trade relationship as complicated as with China. During the campaign, Trump blasted China for what he alleged was a pattern of cheating through currency devaluation and other measures to steal American jobs and hurt U.S. workers.

[U.S. and China swap hard-line lists of demands at trade talks in Beijing]

The United States buys more than $500 billion in goods from China each year, but Trump has proposed to force China to buy an additional $200 billion in goods from the United States.

Several weeks ago, as tensions between the White House and Beijing escalated, both sides promised to impose increasingly severe trade restrictions on the other, spooking financial markets amid fears of a trade war.

Chinese leaders have tried to resist Trump’s demands, but in recent weeks they have shown a willingness to negotiate. The economies are inextricably linked, as China relies on U.S. consumers to buy many of its products, and the United States relies on Chinese producers for a range of goods.

Trump has repeatedly cited a “friendship” with Xi, though they’ve met only a few times, and he has said that this relationship will endure no matter what happens with the trade talks. One of the biggest sources of tension between the two countries, though, is the allegation that China steals intellectual property from U.S. companies and then retools it for its firms.