Why Putin misjudged the war in Ukrain.

More than seven weeks into his war against Ukraine, Russian President Vladimir Putin is feeling the sting of failure.

Thousands of Russian battlefield deaths. Three front-line retreats by the Russian military. Millions of Ukrainians who will never forgive Moscow. More isolation than ever — and perilously few goals achieved.

National security reporter Paul Sonne explains how Putin misjudged the war in Ukraine.