Overstretched Russian forces may lack the mechanized reserve to thwart Ukraine establishing a bridgehead on the Dnipro river, report says

• A "mechanized" Russian counterattack may threaten Ukraine's advanced position, a think tank says.
• The Institute for the Study of War said it was unclear if Russia had the necessary reserves.
• Ukraine's special forces recently broke Russian defensive lines in a raid across the Dnipro River.

Russia's overstretched forces may lack the mechanized reserve to successfully thwart a Ukrainian bridgehead across the Dnipro River, a report by the Institute for the Study of War says.