Just so we are on the same page. Here we "can't get a conviction" because the person resides in a country which doesn't care about the crime he committed. Not because the evidence does not pass the required evidentiary level.

> don't have the right to ruin a life.

Please explain to him how a life is ruined here?

> Any deviation from this principle leads to mob rule.

Where a mob is a single high profile individual with his reputation on the line, and this singular "mob" performed a through analysis and provides the full reasoning how he come to the conclusion. This "mob" rule does not look like the ones I usually hear about.