But at the same time, Zelensky and his lieutenants seek to depict a landscape in which their armed forces already may be poised to gain the upper hand — implicitly promising that the country’s sacrifice of lives, together with Western allies’ growing economic and energy strains stemming from the war, will ultimately prove worthwhile.

“We have a significant potential for the advance of our forces on the front, and for the infliction of significant new losses on the occupiers,” Zelensky said late Thursday in his nightly address to the country.

The two messages aren’t necessarily contradictory. Calibrating them, however, is a difficult task.

Too much triumphalism, while boosting domestic morale, can undercut the urgency of appeals for more Western weaponry. By contrast, any appearance of defeatism could accelerate outside calls for Zelensky to agree to territorial concessions to Moscow and perhaps end the fighting before winter sets in.

The advent of cold weather will mean Ukraine’s European allies face a far more intense Kremlin-inflicted energy crunch. Austin acknowledged as much, citing the challenges in keeping up the pressure on Russia.