Comment by tetromino_

> have drones made combat helicopters obsolete?

Which drones?

Helicopters are vulnerable to small quadcopter drones when landing and taking off. This limits some traditional uses of helicopters (anything that involves landing in enemy territory becomes much more risky) but still leaves others (shooting missiles at surface targets).

Helicopters are very effective at shooting down large fixed-wing drones.

Helicopters are very effective at sinking drone boats without air defenses, but are in turn very vulnerable to drone boats equipped with SAMs.