Barbara Platt USA

In this war, but also 20 years ago at that time, they massacred hundreds of thousands of Darfuris from these tribes.

They were employed by the military dictator Omar al-Bashir to put down local rebellions.

And their tactics, the investigators say, are quite similar, which has to do with looting, mass killings, burning villages, essentially trying to push these particular populations out of the area.

Well, I mean, possibly.

There is an existing international criminal court mandate for Darfur, which harkens back to that conflict 20 years ago.

So it is now actively investigating again these atrocities.

But bringing perpetrators to accountability from that first Darfur war took decades.

I think it's only in the last six months there was the first conviction.

So if it does happen, it's not likely to be a speedy process.

Tell me, Lindsay, about the letter that you are writing to the Iranian authorities.