 KYIV, Ukraine AP A series of explosions rocked Kyiv on Saturday morning and minutes later air raid sirens started to wail as an apparent missile attack on the Ukrainian capital was underway. Critical infrastructure in Kyiv was targeted, the deputy head of Ukraines presidential office, Kyrylo Tymoshenko, said on Telegram. An unidentified infrastructure object ... Explosions heard in Kyiv; Ukrainian officials say key... 