Somewhere in the galaxy:

"Madame Prime Minister, that planet's declared off-limits because of the savages."

"General, we have the most well-trained military in the galaxy, but you're saying it's too dangerous for them to land on that planet and extract its resources?"

"Yes, ma'am."

"Why, General?"

"Vaporizers, ma'am."

"Do expound ..."

"Well, ma'am, once they developed vaporizers, as most civilizations do, instead of restricting them, they sold them freely. The only way to stop one vaporizer is with another vaporizer."

"Weaponized savages?"

"Yes, ma'am. We lost several expeditions before the quarantine. It's the most dangerous inhabited planet we've ever encountered."