– President Donald Trump’s chief economic adviser said Sunday that U.S. consumers will bear a burden from the escalating trade war with China, contradicting Trump’s claim that his tariffs are a multibillion-dollar, one-way payment by China to the U.S. Treasury.

Adviser Larry Kudlow made his comments two days after negotiations for a trade deal with China broke off and Trump followed through on a threat to raise tariffs on $200 billion worth of Chinese exports.

“In fact, both sides will pay,” Kudlow said in an interview on Fox News. “Both sides will pay in these things.”

Kudlow’s acknowledgment was merely a recognition of Economics 101. But it flew in the face of one of the president’s favorite arguments: that trade wars are easy to win, and that the pain falls disproportionately on U.S. trading partners, which he accuses of having exploited the U.S. for years through predatory trade practices.

After months of pressing urgently for a deal with China, Trump abruptly shifted course last week, stung by what he viewed as its attempt to renege on key parts of a draft agreement. The president declared he was ready to prolong the standoff with Beijing because the cost of a trade war is much higher for the Chinese, with their huge numbers of exports to the United States, than it is for Americans.

“Talks with China continue in a very congenial manner,” Trump said Friday on Twitter. “There is absolutely no need to rush — as Tariffs are NOW being paid to the United States by China of 25% on 250 Billion Dollars worth of goods & products. These massive payments go directly to the Treasury of the U.S.”

He went further in a subsequent tweet, claiming that tariffs would “bring in FAR MORE wealth to our Country than even a phenomenal deal of the traditional kind” — a statement that seemed to undercut his administration’s contention that China has robbed U.S. companies of billions of dollars through coercive practices like the forced transfer of technology and unfair licensing agreements.

There is no doubt that China is being buffeted by the tariffs, which could soon apply to virtually everything it exports to the U.S. Kudlow said economic growth in China would slow as its exports diminished. He argued that the effect on the U.S. economy would be modest — only a 0.2% reduction in growth — even if Trump extended tariffs across the board, as he has threatened to do.

“You got to do what you got to do,” Kudlow said. “In my judgment, the economic consequences are so small, but the possible improvement in trade, and exports, and open market for the United States — this is worthwhile doing.”

The Chinese government said Sunday that the door to resolving the impasse was always open, but that it would not yield on matters of principle, according to state news media. There are no winners in a trade war, the People’s Daily newspaper said in a commentary carried by the official Xinhua News Agency on Sunday. China does not want to fight, the newspaper said, but it is not afraid to do so.

While economists differ on how much the trade war will crimp economic growth, most agree that the cost of tariffs is passed on to consumers in the form of higher prices on everything, from lighting fixtures to art supplies. Among the items covered by the administration’s latest increase in tariffs to 25%: computers, toilet paper, dog collars, Christmas tree lights and mattress supports.

“Trump is dragging a dangerous misconception into a critical moment in his standoff with the Chinese,” Chad Bown, a trade expert at the Peterson Institute for International Economics, said last week. “And American businesses and consumers stand to pay the price.”

Kudlow held open the prospect of progress: He said Trump was likely to meet President Xi Jinping of China at the Group of 20 summit next month in Osaka, Japan.

It was hard to tell if Trump’s hard line was merely a negotiating tactic. But as the 2020 election campaign begins, he is showing clear signs that he views standing firm as a winning political strategy.

At a rally last week in Florida, he criticized Democratic front-runner Joe Biden for being weak in his dealings with foreign leaders and ridiculed the prospect of Pete Buttigieg, the 37-year-old mayor of South Bend, Ind., negotiating with the Chinese president.

Former aides have also warned Trump against signing a watered-down agreement, saying it could become fodder for Democrats, particularly progressives like Sen. Bernie Sanders, I-Vt., who has staked out a position on China trade as hawkish as that of Trump.

For his part, Trump has argued that China’s decision to pull back from an agreement last week reflected Beijing’s calculation that it could extract a better deal from a Democratic president.

“I think that China felt they were being beaten so badly in the recent negotiation that they may as well wait around for the next election, 2020, to see if they could get lucky & have a Democrat win,” Trump tweeted Saturday, “in which case they would continue to rip-off the USA for $500 ­Billion a year.”