good rev in the financial review today, page-5

I would hardly say that any of the things mentioned in this article are cause for panic.

These sorts of risks are already baked into the share price
As an example the DRC tax increase amounts to less then 2c per pound, hardly cause to panic.

The global economic climate poses far more risk to tiger's profits than this.

If you are really concerned about the political climate in Africa I would suggest investing in Oz minerals. I believe their cash costs to extract copper are anywhere from 20 to 80% higher than TGS. Alot more than 2c/lb.