Key Takeaways from the ISW : Ukrainian forces are reconnoitering and interdicting Russian ground lines of communication (GLOCs) in and near occupied Mariupol, Donetsk Oblast (about 105 kilometers from the frontline), demonstrating increased capabilities as part of Ukraine’s intensifying mid-range strike campaign. Russian forces likely do not maintain positions in Kupyansk after struggling for months to support a small and isolated group of servicemembers that infiltrated into the city. Ukraine