https://www.bbc.co.uk/news/world-europe-61508922

<quotes>

Russia claims to have used laser weapons on the battlefield in Ukraine, although the US says it has seen no evidence of this and Ukraine has derided it as propaganda

Ukrainian President Volodymyr Zelensky mocked the Russian claim, comparing it to the so-called "wonder weapons" that Nazi Germany claimed to be developing during World War Two.

But there is at least one country which has developed a laser weapon. Last month Israel released video showing a laser system shooting down rockets and drones.

</quotes>

And the US. Others are also developing them. Raytheon might even sell you one ...

https://www.raytheonintelligenceandspace.com/news/2022/03/31/ris-pairs-laser-weapon-with-nasams-air-defense-system-to-destroy-swarm-of-drone-targets

It may be propaganda that Russia is deploying such weapons in Ukraine, but mocking the notion of laser weapons doesn't mean they don't exist, aren't feasible.

Suggesting Nazi "wonder weapons" were somehow imaginary, mere propaganda, is also rather disingenuous.

I imagine there might have been a few conversations in Japan along the lines of; Bullshit. You say it falls from the sky, goes bang and flattens an entire city ?