A news blackout in southern Ukraine means "something big is going on", military expert Professor Michael Clarke has told Sky News.
Professor Clarke, former director-general of the Royal United Services Institute (RUSI), said: "The Ukrainians have conducted a complete news blackout on what is happening in the Kherson oblast because the Russians are holding a line between Snihurivka and Mylove, and that line they have been holding onto for over a week now as Ukraine moves south.
"When the Ukrainians have a news blackout it means something is going on. They have always done this before when there is a big offensive push on.
"I am guessing in the next 48-72 hours they might tell us what is happening.
"Now for sure, something big is happening. It might fail, it may not work, but in the past, it has worked.