Ukraine is accusing Russia of using spy balloons as part of its ongoing war — saying it shot down six over the Ukrainian capital, Kyiv. “Aerial targets were detected in the sky over the Kyiv region. As a result air defense kicked into action,” the Kyiv Regional Military Administration reported on Telegram. “Keep calm and stay in shelters!” Although the message did not specify when the balloons were shot down, air alerts were issued in Kyiv on Wednesday. The apparent use of balloons comes on top of the US shooting down several unusual objects in American skies, including a balloon...