Sri Lanka, Dec. 23 -- Russia has intensified its strikes on the southern Ukrainian region of Odesa, causing widespread power cuts and threatening the region's maritime infrastructure.

Ukrainian Deputy Prime Minister Oleksiy Kuleba said Moscow was carrying out "systematic" attacks on the region. Last week, he warned that the focus of the war "may have shifted towards Odesa".

President Volodymyr Zelensky said the repeated attacks were an attempt by Moscow to block Ukraine's access to maritime logistics.

Earlier in December, Russian President Vladimir Putin threatened to sever Ukraine's access to the sea as retaliation for drone attacks on tankers of Russia's "shadow fleet" in the Black Sea.

"Shadow fleet" is a term that refers to hundre...