In a matter of months, America went from enjoying a peacemaking presidency to suffering under a warmongering one.

This is not an exaggeration.

One of the principles of former President Trump’s foreign policy stance, dubbed “The Trump Doctrine,” was “peace through strength.” Although he was tough on countries that did not treat the United States fairly, he knew how to stand strong on issues without jeopardizing America’s relationships—and get a good deal in the process.

President Joe Biden clearly does not have that ability, as he insulted Russian President Vladimir Putin by calling him a soulless “killer,” adding that he will “pay a price” for interfering with the 2020 US presidential election, during a Wednesday interview with ABC News.

Russia is not taking kindly to Biden’s confrontational comments, to say the least.

“I would say to him: I wish you good health,” the Russian president ominously said to Biden. “I say that without irony and not as a joke.”

Putin added that Russia “will be working with the U.S. but in the areas that are interesting for us and on conditions profitable for us. And they will have to reckon with it.”

“They will have to reckon with it despite all the attempts to prevent our development, despite the sanctions and insults, they will have to reckon with it,” said the Russian president.

As if this warning wasn’t damning enough for a weak American president, the Daily Mail reported Putin’s spokesman, Dmitry Peskov, said, “He [Biden] clearly does not want to improve relations with our country, and we will be proceeding based precisely on this,” he told reporters on a conference call on Thursday.  “There hasn’t been anything like this in history.”

Russia has also called back their Ambassador to Washington DC, Anatoly Antonov, to reassess their relationship with the US. Upon his return to Moscow, they will engage in “consultations conducted with the aim of analyzing what should be done and where to go in the context of ties with the United States,” the New York Post reported.

Tensions have undeniably escalated between Russia and the U.S. because of Biden’s reckless behavior in the White House, but it is not yet clear how badly the relationship has been strained. While an armed conflict would be a stretch, we can surely expect a full-blown economic war between the two longstanding rivals.