Madrid (AFP) - The leaders of Finland and Sweden met Turkish President Recep Tayyip Erdogan on Tuesday ahead of a NATO summit in Madrid in a bid to get him to drop objections to them joining.
Erdogan has stubbornly refused to greenlight the applications from the Nordic pair -- lodged in response to Russia's war on Ukraine -- despite calls from his NATO allies to clear the path for them to enter.
He was expected to meet with US President Joe Biden on Wednesday on the sidelines of the gathering focused on responding to the Kremlin's invasion of its pro-Western neighbour.
Turkey can essentially veto Finland and Sweden from joining NATO since all members must agree to taking on new members.
Ankara has accused Finland and especially Sweden of offering a safe haven to Kurdish militants who have been waging decades-long insurgency against the Turkish state.
The Turkish leader has also called on the two countries to lift arms embargoes imposed on Turkey in 2019 over Ankara's military offensive in Syria.
NATO Secretary General Jens Stoltenberg, who is mediating the talks, said he hoped to make "progress" on the issue at the summit which ends on Thursday.
The talks would continue after a dinner on Tuesday for the national leaders taking part in the summit, the Turkish government said.
Sweden and Finland went into the NATO meeting open to the possibility that Turkey might only lift its objections after the summit concludes on Thursday.
"We have made progress.That is definitely the case," said Swedish Foreign Minister Ann Linde.
Finnish President Sauli Niinisto said he was neither "optimistic nor pessimistic at this stage".
But Erdogan said on Monday before flying to Madrid that Turkey does "not want empty words.We want results".
'Interest of the alliance´
Speaking to reporters aboard Air Force One, US National Security Advisor Jake Sullivan said Biden and Erdogan would "at some point" meet on Wednesday on the sidelines of the summit.
But he stressed the United States was not adopting a "brokering role" and would leave the NATO secretary general in charge.
"Rather, we're going to do what many other allies have done which is indicate publicly and privately that we believe it is in the interest of the alliance to get this done," he added.
"And we also believe that Finland and Sweden have taken significant steps forward in terms of addressing Turkey's concerns."
Analysts believe the meeting between Erdogan and Biden could play a crucial role in breaking down Turkey's resistance to bids by Sweden and Finland to join the Western defence alliance in response to the war.
The two leaders have had a chilly relationship since Biden's election because of US concerns about human rights under Erdogan.
Biden and Erdogan last met briefly in October on the sidelines of a G20 summit in Rome.
Fighter jet talks
Erdogan's ability to maintain a close working relationship with Russian President Vladimir Putin while supporting Ukraine's war effort has made him an important player in the conflict.
But those ties have also complicated his relations with Biden and NATO.
Washington has sanctioned Ankara for taking delivery of an advanced Russian missile defence system in 2019.
The purchase saw the United States drop Turkey from the F-35 joint strike fighter programme and impose trade restrictions on its military procurement agency.
But Washington has signalled it may be willing to move past the dispute.
Biden's administration has dangled the possibility of supplying Ankara with older-generation F-16 jets that could replenish Turkey's ageing air force fleet.
"The most important issue is the F-16 issue.It is still on the table," Erdogan said of his upcoming talks with Biden.
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