The SNP leader admitted the word "national" could be "hugely problematic".
Obama Hails UK Ahead Of Referendum
The United Kingdom appears to have "worked pretty well'', Barack Obama declared as he said America's interest in the Scottish referendum issue was to ensure it retained a "strong, robust, united and effective ally''.
The US president was pressed for his thoughts on the question of independence as he appeared alongside Prime Minister David Cameron at a press conference following the G7 summit in Brussels.
"There is a referendum process in place and it is up to the people of Scotland,'' he told reporters.
"The United Kingdom has been an extraordinary partner to us. From the outside at least, it looks like things have worked pretty well.
"And we obviously have a deep interest in making sure that one of the closest allies we will ever have remains a strong, robust, united and effective partner.
"But ultimately these are decisions that are to be made by the folks there.''
A police watchdog probe was launched after the remains of the 52-year-old were found in a house in Dumfries in February last year.
The accident happened at about 7.50pm on Thursday in Moodiesburn, North Lanarkshire.
More than 70 firefighters were needed to bring the blaze under control at Blochairn Fruit Market in the early hours of Thursday.
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