On Sunday, DPR media reported that the Ukrainian Navy had conducted an attack near the front line along the coast of the self-proclaimed republic in the Sea of Azov, using two small vessels based in the Kiev-controlled coastal city of Mariupol.
DPR People's Militia deputy head Eduard Basurin said that Navy gunboats had opened fire on militia positions with small-bore weapons and large-caliber machineguns, violating the ceasefire, and that the militia were forced to return fire, leading both Ukrainian boats to promptly leave the area.
A day later, a spokesperson from the DPR's Defense Ministry told Russian news agency RIA Novosti that militia "have taken appropriate measures, and are now prepared for these kinds of provocations from the sea" in the future.
But the attack wasn't the first by the Ukrainian military in recent weeks. Last month, Ukrainian forces attempted to break through local militia positions along the coast of the Azov Sea. Ukrainian forces suffered heavy losses with 15 men reported killed, and 20 more wounded.
Observers warn that the attacks on coastal areas of the breakaway territories may intensify as the Ukrainian Navy makes progress on the creation of its 'mosquito fleet', which is expected to consist of about 30 modern or modernized small- and medium-sized boats and patrol craft by the end of the decade. Ukrainian Navy deputy chief Andriy Ryzhenko announced the 'mosquito fleet' initiative last October, moving away from the traditional sea- and ocean-going naval concept.
Kiev's active buildup and testing of its 'mosquito fleet' follows on the decline and near-collapse of Ukraine's traditional fleet in 2014. Following the February 2014 Maidan coup and the Crimean peninsula's referendum to return to Russia, the size of Ukraine's Navy was cut in half, dropping from about 15,000 to 6,500 men, with many officers, including vice admirals and rear admirals, as well as able seamen, resigning and volunteering to join the Russian Black Sea Fleet instead. The center of the Navy's operations was subsequently moved from Crimea to Odessa in the northwestern Black Sea.
The 'mosquito fleet' could come to support a broader offensive, however, an eventuality that does seem like a terrifying possibility as Kiev continues to stall the implementation of the Minsk agreements on Ukrainian peace.