This footage appears to show Russian Ka-52 and Mi-28 attack helicopters attacking military positions in Ukraine.

The video begins by showing one of the attack helicopters, bearing the now infamous 'Z' symbol on the side of the cockpit, ready for take off at an undisclosed location.

The 'Z' is one of the symbols, as well as the letters 'V' and 'O' that can be seen painted on Russian military vehicles taking part in the invasion of Ukraine.

The footage then shows another attack helicopter getting ready to take off before the war machines take to the sky and can then be seen flying low over countryside.

They can be seen opening fire on unseen targets while continuing to fly low before one of the attack helicopters is seen returning to base and coming in to land as the footage ends.

The images were obtained from the Russian Ministry of Defence (MoD) on Monday, September 19, along with a statement claiming that the images show the 'combat work of the crews of Ka-52 and Mi-28 attack helicopters during the special military operation.'

The Russian MoD also claimed: 'The pilots fly in mixed combat pairs, which increases the strike potential. Approach to the zone of combat is carried out at an extremely low altitude with enveloping the terrain. This allows the crews to remain unnoticed by enemy air defence systems.'

The Russian MoD also appeared to quote a member of the helicopter crews, who it named only as 'Maxim', as saying: 'We completed 58 sorties, we work exclusively by coordinates. Everything is clear and precise. The crews are experienced: everyone knows how, everyone knows...'

Russia invaded Ukraine on February 24 in what the Kremlin is still calling a 'special military operation'.

The General Staff of the Armed Forces of Ukraine reported that between February 24 and September 19, Russia had lost about 54,650 personnel, 2,212 tanks, 4,720 armoured combat vehicles, 1,313 artillery units, 312 multiple launch rocket systems, 168 air defence systems, 251 warplanes, 217 helicopters, 920 drones, 238 cruise missiles, 15 warships, 3,581 motor vehicles and fuel tankers, and 125 units of special equipment.

Russia has claimed that its casualties have been much lower but provides infrequent updates on its latest figures.

The Ukrainian military has said that it has repelled Russian attacks in the east of the country, in the Kharkiv region, as well as in the south of the country, in the Kherson region, adding that its troops have made further advances in the Kharkiv region, taking the eastern bank of the Oskil River.

Ukraine's President Volodymyr Zelensky has said that there will be no lull in fighting to retake Ukrainian land occupied by Russian forces. He said in his nightly address on Sunday, 18th September: 'Perhaps it seems to some of you that after a series of victories we now have a lull of sorts', adding: 'But there will be no lull. There is preparation for the next series… For Ukraine must be free. All of it.'

The General Staff of the Ukrainian Armed Forces said on Sunday that it had carried out 20 airstrikes against Russian positions in the last 24 hours.

British intelligence has said that Russian strikes on civilian infrastructure have increased. It said on Sunday: 'As it faces setbacks on the front lines, Russia has likely extended the locations it is prepared to strike in an attempt to directly undermine the morale of the Ukrainian people and government.'

The Canadian Prime Minister, Justin Trudeau, told reporters in London on Sunday, where he is attending the funeral of Queen Elizabeth II today, that the mass graves that have been found in Izium are evidence of Russian war crimes against Ukraine. He said: 'Obviously the UK and Canada have been two of the strongest countries in standing up in support of Ukraine and pushing back against Russia's illegal actions.'

Prime Minister Trudeau said that these actions 'increasingly, clearly include war crimes, include absolutely unacceptable crimes, whether we think of what we found in Bucha or the discovery of mass graves in the reclaimed territories by Ukraine.'