KYIV, Ukraine (AP) — Russia has conducted what officials called a “massive” missile and drone attack against Ukraine’s energy infrastructure. The assault added to fears that the Kremlin aims to cripple Ukraine’s power generation capacity before winter. Ukraine’s energy minister says attacks on energy facilities were happening all across the country on Thursday. He says emergency power outages are being implemented nationwide. Ukrainian officials have warned that Russia is stockpiling cruise and ballistic missiles, presumably for another pre-winter aerial campaign against Ukraine’s power grid. Ukrainian officials have in the past accused Russia of “weaponizing winter.” Around half of Ukraine’s energy infrastructure has been destroyed during the war with Russia, and rolling electricity blackouts are common.