As summer warms Istanbul's waters, the megacity's authorities are having to battle a noxious algal bloom dubbed "sea snot".

The latest infestation to befall Istanbul is ticks, which have swarmed some neighbourhoods of Turkey’s biggest city and sent nearly 8,000 people to hospital with bites so far this year. Thirteen ...

Russia's Foreign Ministry said it had notified Ukraine, Turkey and the United Nations that "without Russia's participation, the 'Black Sea Initiative' ceases to function from July 18".

The Black Sea is hugely important to the efforts of President Vladimir V. Putin of Russia to expand Moscow’s influence and, stemming from that, it has been a locus of instability.