ritish defense officials have said that Russia is struggling to control the Black Sea, as explosions rocked the Crimean peninsula located along its shoreline in the latest blow to Moscow's forces in the region.
On Tuesday, blasts at an ammunition depot in the Dzhankoi district of Crimea, near the village of Mais'ke, damaged power lines, a power plant, and residential buildings in what Russia's defense ministry described as a result of "sabotage."
It came days after explosions at the Saki air base in the west of Crimea sparked an exodus of Russian vacationers from the region Moscow seized in 2014.
Six months into Russian President Vladimir Putin's full-scale invasion of Ukraine, Britain's Ministry of Defence (MOD) outlined in its daily update how Russian losses in the Black Sea that borders the peninsula had shown how tricky Moscow was finding it to maintain supremacy in the region it considers its backyard.
The Black Sea Fleet continues to use long-range cruise missiles to support ground offensives but is currently struggling to exercise effective sea control," the defense officials said.
As well as "a significant portion of its naval aviation combat jets," the assessment referred to Russia's losses of its flagship Moskva, as well as control of Snake Island, the strategic and symbolic Black Sea location bitterly fought over since the start of the Ukraine war.
In April, Ukraine said that it struck the Moskva—worth an estimated $750 million—with two Neptune missiles that killed as many as 250 sailors. Moscow says the ship perished due to an onboard fire.
In June, Kyiv said its Harpoon missiles struck the Russian tugboat Spasatel Vasily Bekh that was transporting personnel, weapons and ammunition to Snake Island. Later that month, Ukraine said it had driven out Russian forces from the island, although Moscow said it had voluntarily withdrawn its forces.
The Black Sea Fleet's "currently limited effectiveness undermines Russia's overall invasion strategy," said the British defense ministry on Tuesday. This was partly because "the amphibious threat to Odesa has now been largely neutralized," referring to the Ukrainian port city.
"This means Ukraine can divert resources to press Russian ground forces elsewhere," it said, adding that Russia's vessels "continue to pursue an extremely defensive posture, with patrols generally limited to waters within sight of the Crimean coast."
Newsweek reached out to the Russian defense ministry for comment.
The strategic importance for Putin of the Black Sea was evident early on in the conflict when he moved to secure the Sea of Azov which links it with mainland Russia.
The Russian navy moved quickly to enact a blockade of the Ukrainian coast, which stranded food supplies until an agreement was reached last month, brokered by the U.N. and Turkey.