Russia has threatened Ukrainians with a new “freeze” this winter, appearing to signal that Moscow could intensify its attacks on Ukraine’s energy infrastructure and civilian population – just one day after Kyiv offered Russia a mutual ‘freeze’ on attacks on civilian targets in the Black Sea. On Friday, Russia’s defense ministry posted a photo of attack drones with the caption “Like snow on your head.”JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. It followed with a message directed at Ukrainians: “Winter will bring you a ‘freeze.’” The post appeared to be a threat to step up Russia’s drone campaign as temperatures drop, potentially targeting the energy infrastructure that keeps millions of Ukrainians warm through the winter. Just one day earlier, on Thursday, Ukraine offered Russia a mutual halt to attacks on civilian ships and port infrastructure in the Black Sea. Kyiv transmitted the proposal through an unnamed third country. The Russian defense ministry declined the proposal on Friday, saying that “the Russian Armed Forces continue to strike Ukraine’s port infrastructure and vessels at sea being used in support of the Ukrainian Armed Forces.” Kyiv’s truce offer came amid a Black Sea escalation Ukraine’s proposal was made as Russian attacks on Ukrainian ports and commercial shipping have severely disrupted the country’s vital export routes. Ukraine’s grain exports fell 76% year-on-year in the first part of August, according to Reuters, as intensified attacks disrupted maritime trade.