Black Sea
Blockades decimated "the breadbasket of Europe", pushing millions closer to famine and adding to soaring inflation worldwide.
Ukrainian officials said their forces hit the vessel with missiles, while Russia acknowledged a fire aboard the Moskva but no attack.
Russia releases video footage showing their coast guard allegedly ramming a Ukrainian ship in the Kerch Strait. Ukrainian authorities say they had given advance notice. Now six seamen have allegedly been wounded by Russian coast guards with open fire and are holding the Ukrainians captive. Ukraine's president is demanding their immediate release.
Ukraine says three of its ships have been seized and two of its sailors wounded.
A ship found at the bottom of the Black Sea has been dated to 400 BC, making it the oldest intact shipwreck in the world. An archaeology project has been mapping the area where dozens of ships lie on the seabed.
It took three years to find, as part of a new archeology project.
An expert shares his wisdom with HuffPost UK.
Of the 92 people on board there are thought to be no survivors.