Biden says US 'should sell' F-16s to Turkey
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Biden added that for the sale, "I need congressional approval to do that and I think I can do that".
The declaration of support from Biden comes after Turkey surprised fellow NATO members at a summit in Madrid by suddenly dropping weeks of opposition to the Finland and Sweden applications to join the alliance.
Unanimous consent by NATO members is required for enlargement.
Turkey is an important NATO member in a strategically sensitive location, but it has had often tense relations with its European partners and Washington, which is the alliance's main military force.
Washington saw Ankara's purchase as potentially threatening the security of the F-35 programme.
Turkey next set out to buy new F-16s, as well as obtaining upgrades for its existing, but outdated fleet of the same planes.
However, that deal is also on hold and there has been speculation that Turkey was holding up the NATO accession bids of the two northern European countries to try and leverage concessions.