Editor’s Note: Frida Ghitis, (@fridaghitis) a former CNN producer and correspondent, is a world affairs columnist. She is a weekly opinion contributor to CNN, a contributing columnist to The Washington Post and a columnist for World Politics Review. The views expressed in this commentary are her own. Read more opinion at CNN. CNN — In the dead of night on Tuesday, shortly before 3 am, residents near Ukraine’s Nova Kakhovka hydroelectric power plant heard a loud blast followed by the roaring sounds of rushing water. The dam, which held back a section of the Dnipro River, had collapsed and the...