“Germany’s outgoing government is said to have blocked a British proposal to sell dozens of Eurofighter Typhoon combat jets to Turkey after the arrest of the mayor of Istanbul, potentially creating significant tensions between London and Berlin.” https://www.thetimes.com/uk/defence/article/germany-blocks-fighter-jet-sale-turkey-nato-p896kwgnm
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At the same time, not sending them fighter jets might decrease their willingness to defend NATO allies.