andy, I think you're talking about 'the law' rather than 'justice'? Megrahi was convicted and sentened under tthe law, so the sentence should stand?
'Justice' is a pretty elastic and subjective concept at the best of times, and as I said has always co-existed with compassion. A jury might acquit someone who is technically guilty - not just in the 18th century, either
http://en.wikipedia.org/wiki/Clive_Ponting
- a judge might reduce a sentence for compassionate reasons, and a politician may intervene later and alter the sentence. Remember,
the law allows him to do so. It's not just a whim. I have no way of reading the minister's mind and knowing whether he wanted to get jobs for Scots in the Libyan oil industry or wanted to stick two fingers up to Washington, or whatever. But on the face of it, releasing someone who is dying seems reasonably compassionate, and that looks like a proper application of the law.