A call to have Tony Blair charged with war crimes was today backed by independent MSP Margo MacDonald. The bid to have the Prime Minister stand trial for his handling of the Iraq war is being made by Mrs MacDonald's husband, ex-SNP MP Jim Sillars. He has sent a 10,000-word document to the Lord Advocate Elish Angiolini outlining why he believes Mr Blair should face two charges in connection with the invasion in 2003. Mr Sillars claimed he has been told by legal experts that the PM has a case to answer, even though similar attempts have failed in England. "There can be no prosecution at the international criminal court because it doesn't have jurisdiction," he said. "There is no chance of a special court being established by the United Nations as Britain and the US have the veto at the security council. "There is no chance of a prosecution in England and Wales. "But of course Scots law is an entirely different entity, an entirely different jurisdiction with different rules, procedures and instruments available to it." He believes that the necessary powers to arrest and charge Mr Blair exist in Scotland, and has called on the Lord Advocate to investigate. Mr Sillars said there is "overwhelming evidence" that Mr Blair is guilty of conspiracy to wage and of waging aggressive war. The evidence includes official memos, the memoirs of weapons inspector Hans Blix and the Butler report.