Update (0703 EST): Explosions reported in Kremenchuk, Poltava Oblast and throughout Zaporizhzia Oblast.
Following reported sabotage at two strategic Russian airbases, air raid sirens are sounding across all Ukraininan oblasts. Dozens of launches have been reported over the Caspian Sea by Russian long range aviation assets and at least 10 missiles have been spotted by civilians flying through Ukrainian airspace.
Launches have also been detected from Russian Black Sea Fleet vessels.
At least two waves of missiles are inbound with impacts expected in Kyiv within the next five minutes.
Air defenses have been activated in Poltava. Take shelter.