The strikes with Western-made missiles were also reported in Kursk Oblast."Right now, they (Ukrainian soldiers) have the ability to use ATACMS to defend themselves in an immediate-need basis. Understandably, that's taken place in and around Kursk Oblast," Kirby said. "We did change the guidance and gave them guidance that they can use them to strike these particular types of targets."Several media outlets reported on Nov. 17 that U.S. President Joe Biden permitted Ukraine to use its ATACMS missiles to strike against targets on Russian soil. According to some reports, this so far concerns only Russian and North Korean forces amassing in Russia's Kursk Oblast.The policy change follows Biden's previous hesitance to provide such weapons out of concern for escalating tensions with Russia.Biden first eased the restrictions in May to allow Ukraine to use certain weaponry like HIMARS to strike at Russian troops just across the border in the wake of the Kharkiv offensive.