Russia says it hit Ukrainian postal hub and ship as Ukraine strikes Ryazan

What happened: Russia and Ukraine traded drone attacks on infrastructure. Moscow said it hit a Nova Poshta postal terminal, a substation and a cargo ship, while Ukrainian drones caused fires in Ryazan. Key numbers: More than 80 drones hit Kharkiv city and 17 settlements, injuring six. More than 200 drones attacked Ryazan, injuring one. Why it matters: An Al Jazeera correspondent said Ukraine has intensified strikes on Russian oil refineries after a brief pause in late October, while Russia has intensified attacks on Ukraine's power grid, causing rolling blackouts in Kyiv since mid-October.

Russia and Ukraine traded drone attacks on infrastructure. Moscow said it hit a Nova Poshta postal terminal, a substation and a cargo ship, while Ukrainian drones caused fires in Ryazan.

An Al Jazeera correspondent said Ukraine has intensified strikes on Russian oil refineries after a brief pause in late October, while Russia has intensified attacks on Ukraine's power grid, causing rolling blackouts in Kyiv since mid-October.