In which country is the city of Kazan?

In which country is the city of Poznań? In which country is the city of Novosibirsk? In which country is the city of Vladivostok? In which country is the city of Yekaterinburg? In which country is the city of Istanbul? In which country is the city of Izmir? In which country is the city of Antalya? In which country is the city of Thessaloniki?