As the war in Ukraine continues for more than 100 days, Russia is reportedly running short of more precise modern missiles forcing troops to rely on 1960s-era heavy, anti-ship missiles.

A British military intelligence report said Saturday that Russian bombers are launching missiles meant to destroy aircraft carriers with nuclear warheads against land targets in Ukraine.

The 5.5-ton Kh-22 missiles, when used in ground attacks, are highly inaccurate and can cause severe collateral damage and casualties, according to the report.

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Russian forces are focusing on capturing all of Ukraine’s eastern region of coal mines and factories known as the Donbas.

Last month it was reported that Russia has incurred heavy losses since the onset of the war. The Ukrainian ministry claimed that Russia has lost nearly 26,900 soldiers, 2,900 Armored Personnel Vehicles (APV), 1,205 tanks, 542 artillery systems, 193 Multiple Launch Rocket Systems (MLRS), and at least 88 anti-aircraft warfare. In addition, Moscow also lost as many as 2,042 vehicles and fuel tanks, 405 Unmanned Aerial Vehicles (UAV), 200 planes, 162 helicopters, 95 cruise missiles, 41 special equipment and 13 boats.

Ukrainian Air Force also claimed it targeted and destroyed as many as 11 Russian aerial assets and also prevented Moscow’s troops from crossing a strategically significant river in the Donbas. 

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“We have eliminated Russian speedboats and helicopters which they used to cover their attempts,” the governor said at the time. Aerial photos showed destroyed pontoon bridges and armor by the riverbanks.

Russia also reduced the use of precision-guided missiles, which have been responsible for some of Russia’s most deadly attacks in Ukraine, over the last month leading to speculation from Western officials, analysts and media reports that Russia’s missile stocks are running low.

Since invading Ukraine on Feb. 24, Russia has used a number of smart munitions. These include Kh-101 and Kh-55 cruise missiles, which are launched from fixed-wing aircraft such as the Tu-95 Bear and Tu-160 Blackjack bombers. 

In addition to cruise missiles, Russia has fired a number of ground-launched ballistic missiles at Ukraine, including the Tochka-U and the Iskander-M.

However, as the war entered the third month, a change in Russian tactics saw with particular increase in use of conventional unguided bombs.