I want to know the answer to the following question:
Who did Russia first have issues with when moving towards the warmer ports in the Black Sea?
All the background I'm provided with is that "For over 200 years, Russia had been expanding southwards across the sparsely populated "Wild Fields" toward the warm water ports of the Black Sea that did not freeze over like the handful of other ports available in the north.". Is that enough to answer the question?
Answer: no