Ukraine behind new pipeline explosion in Siberia that supplies Russian military-industrial complex, source claims * Russian troops tasked to create 10-kilometer buffer zone in Dnipropetrovsk Oblast, Ukraine's spy chief says * Ukrainian drone strikes reported at Russian MiG plant,

Officials say a Russian drone barrage has targeted the center of Kharkiv, injuring nine people and damaging a maternity hospital in Ukraine’s second-largest city

Poland's scrambling of aircraft comes amid heightened tensions across the alliance's eastern flank over Russia's aggression. It follows another NATO member, Romania, announcing it would implement an Iron Dome defense system similar to that used by Israel.