U.S. President Donald Trump on Tuesday announced that Washington would lift U.S. sanctions on Turkey that were imposed in 2020 over Ankara’s purchase of Russian defense missiles, while expressing a willingness to sell the fellow NATO ally F-35 fighter jets.

The move would be a massive gesture from Trump to Turkish President Tayyip Erdogan whom he considers a close ally and would remove a major long-standing irritant in bilateral ties.

Even as Washington and Ankara have enjoyed warmer ties under Trump, Turkey’s 2019 acquisition of the Russian S-400 system has long been a sore point for both sides.

In response to that purchase, Washington in 2020 imposed sanctions on a major Turkish defense company and removed Turkey from the F-35 stealth fighter jet program, where Ankara was also a production partner.

“We’re going to be taking the sanctions off,” Trump told reporters just before his meeting with Erdogan during a visit to Turkey for a NATO summit. He added that his secretary of state and Treasury secretary were working on the issue.

Trump was also upbeat about the possible sale of F-35 stealth fighter jets to Turkey even as he did not say how exactly such a transaction would take place given the legal hurdles.

“Turkey has been, in many ways, much more loyal than other countries that we think would be loyal. … It’s a great plane, it’s the best, currently the best plane by far. And it’s certainly something we will consider,” Trump said.

Congress passed a law prohibiting any F-35 sales to ​Turkey as long ⁠as Ankara retained the S-400s, saying the Russian system posed a security risk to U.S.-made combat aircraft. Currently, the U.S. law does not permit Turkey to operate or possess the S-400 system if it wishes to rejoin the F-35 program.

Earlier, two sources familiar with the matter told Reuters that Trump was expected to throw his support behind a potential F-35 sale to Turkey. One solution that has in recent weeks gained traction is to send the Russian system to a third country, although an agreement on this has yet to be sealed, according to the sources, who requested anonymity to discuss sensitive matters.

It was unclear if such a move would be accepted by Russia, which requires end-user obligations in weapons sales.

Trump’s visit to Turkey is the first by a U.S. president in 11 years. He was welcomed by Erdogan with a lavish state ceremony and both leaders sang each other’s praises in their public remarks. Under Trump, Turkey’s deteriorating human rights track record has never been a topic of much concern for Washington.