Wagner Group Detains Russian Officer Amid Tensions with Army.

Ukraine accuses Russia of blowing up a Soviet-era dam on the Dnieper River in a Moscow-occupied area, causing massive flooding downstream in the Kherson region and threatening the Zaporizhzhya nuclear plant. Russia denies the attack and blames Kyiv. The International Atomic Energy Agency (IAEA) is monitoring the situation, and NATO and European Council leaders condemn the attack as a "war crime." Ukrainian officials accuse Russia of "ecocide" and committing a "premeditated crime" to delay the end of the conflict. Tens of thousands of people are being evacuated from the affected areas.