Every Sunday Noori Sani welcomes his old friends around a bountiful Turkish breakfast in Istanbul. But surrounding him now are empty tables on his terrace at his restaurant by the Blue Mosque. “On a day like this, we should be full,” the owner of Serbethane restaurant said in the city’s historic district. TURKEY RELY HEAVILY ON TOURIST FROM RUSSIA AND UKRAINEWithin a few days of Russia’s invasion of Ukraine on 24 February, Ukrainians and Russians cancelled reservations for trips, disastrous for Turkey where tourism represented 10% of GDP before the pandemic. There had been high hopes for a tou…