Romania, Bulgaria, and Turkey are all NATO allies and near Ukraine on the Black Sea. A convoy run inside their 12 mile limits to the Bosporus Strait is possible. Just keep the mine sweeping and ASW going. Putin has talked about escalation to World War III since the war began every time he got a strongly worded letter. He is not going to give NATO nations in the Black Sea a excuse to claim self defense inside their territorial waters.
“Putin has talked about escalation to World War III since the war began every time he got a strongly worded letter.”
Actually, I am not surprised by ANYTHING he would do.
He murders his political opponents, those he believes could turn into political opponents, His own military, Ukraine military and people, kidnaps children because the Russians are escaping across the border.