These are regular Ukrainian military forces – not the militia involved in previous incursions.
The conflict between Russia and Ukraine has recently seen a significant escalation, as Russian forces attempt to repel the largest incursion into their territory in decades by Ukrainian troops.
Vladimir Putin has been forced to call in reserve troops to tackle what Moscow is calling a “counter-terrorism operation”
Ukrainian troops remained in Russia’s western Kursk region last night (Friday, August 9) - up to six miles over the border - as its offensive came to the end of a fourth day.