But if variables are infinite or there are not defined parameters

How about “Ukraine has already used successfully HIMARS against the dam’s locks but ‘is hoping they won’t have to blow the whole thing’ as a last resort”? That should narrow the range of variables.

Kovalchuk considered flooding the river. The Ukrainians, he said, even conducted a test strike with a HIMARS launcher on one of the floodgates at the Nova Kakhovka dam, making three holes in the metal to see if the Dnieper’s water could be raised enough to stymie Russian crossings but not flood nearby villages. The test was a success, Kovalchuk said, but the step remained a last resort. He held off.