Project Vanaheim: How the US and UK are trying to keep up with the UAS threat - Breaking Defense

The pace of new developments will always outpace countermeasure development because by their very nature countermeasures are reactive rather than proactive.

The larger the military establishment and the better funded it is, the farther behind that military will always be when technology is advancing. No major military organization has ever fielded state-of-the-art equipment because the development, testing, review, acquisition, and distribution processes guarantees that something better will always be developed by the time the latest equipment reaches SPC Snuffy.

I guarantee a plasma rifles in the 40 watt range would take care of business.