Apparently some of us (myself included) were told in history class that the Russians were interested in control of Port Arthur/Dalian in part because their port at Vladivostok was not a warm water port (has to deal with sea ice in winter). The answerers to this question are unsure whether or not Vladivostok is currently a warm water port. This leads to a few questions.
Was Vladivostok a warm water port circa 1900?
Is Vladivostok a warm water port now?
If the port of Vladivostok currently or in the past relied on icebreakers to function year-round , when were these introduced?