One way or another, you need the information that Varan has so that progress the story.
But which is the correct choice?
As it turns out, you have more options than you may think.

Should you kill the Shah or Roosevelt?
Both these options are good for different reasons.
Killing both kingpins takes the longest time, but it also gets you the most loot.

Meanwhile, killing Varan is the fastest way to progress the story.
He can be found there, surrounded by his men.
Roosevelt is chilling in his room.

They’re both not very nice people, and Garbage could probably do without either of them.
If you’re a completionist, I’d choose this route before returning to Varan.
But you have to go through this part of the quest whatever the case, so it matters little.

At least this route finishes the quest as quickly as possible, eh!
