Can Russia lose in Ukraine?

Resuming its grain blockade demonstrates the many cards Putin still has to play before rolling out nukes.

Weapons from the West and jury-rigged drones have turned the tables in Ukraine, giving defending forces artillery superiority over Russian invaders now staging what looks like a doomed effort to maintain their conquest of the southern port city of Kherson.

But Russia still has many cards to play. After a drone attack on its Black Sea fleet at Sevastopol…