They are already playing God with the weather and climate
The High-frequency Active Auroral Research Program, or HAARP
HAARP, the most powerful ionosphere heater on Earth
The HAARP beam is broad like a flashlight, not narrow like a laser, but it can be electronically steered anywhere within 30° of zenith - that is, local vertical - and it can operate at 3–10 MHz.
Its powerful radio waves drive ionospheric electrons back and forth in what are called plasma waves.
As these driven electrons collide with each other and with background species, their temperature goes up, which is why HAARP is called a heater.