I suspect it's not the actual value of the DSO, or the extra...

I suspect it's not the actual value of the DSO, or the extra Taxation, but the principal of whether the Mali Government sticks to the contactual terms it's previously agreed for this mine. Regardless of the cost it's a sense of whether Mali Gov. can be a trusted or not. I suspect if they adhere to the agreements, and specifically if no taxes are found to be due on imports etc, perhaps less so the DSO, as that wasn't in the original plans anyway, it's more a matter of interpretation (in the shareholders video call, they stated that they felt DSO should be allowed because it was not specifically mentioned, but I suspect that could go either way. In summary it's down to whether the Mali Gov. stick by what was agreed for existing businesses, as opposed to new businesses which would fall under the new rules for DSO and import taxes etc.