NEVER let it be said that I can’t acknowledge when other political parties are entitled to all the credit for a particular decision or achievement.

So as David Cameron and President Obama settle down to talk about the release last year of mass murderer Abdelbaset al-Megrahi, I hope our Prime Minister is similarly generous to Alex Salmond. Because the only reason Al-Megrahi is a free man today is because in May 2007, Scotland allowed the SNP to form an administration in Edinburgh. It was only because of that decision that the nationalist justice minister, Kenny McAskill, was able to set Mr Al-Megrahi free, while pompously declaring that the Libyan would answer to a “higher power” within three months.

Al-Megrahi continues to show modest signs of improvement

That was last August. I understand Mr Al-Megrahi won’t hear a bad word said about the justice minister.

I have no idea whether BP tried to persuade anyone to release the terrorist; if their lobbying skills are anywhere near as effective as their underwater drilling ones, I suspect Al-Megrahi would have had his stay in Greenock jail doubled. And I don’t know what UK ministers discussed as far as a putative prisoner exchange scheme was concerned.

But I do know this: the SNP’s decision to release the bomber to live in comfort in the joyful bosom of his family for the rest of his life was its decision alone. McAskill acted, I can confidently state, completely independently from the concerns of the UK government and, indeed, of BP.

I do hope Mr Cameron will bear that in mind when he speaks with the president. I wouldn’t want the Americans to think anyone other than the SNP should take any of the credit for that one.

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