An independent Scotland would leave the rest of the UK facing a succession of Conservative governments, Labour's shadow Scottish secretary has warned.
Margaret Curran urged voters at the Scottish Labour conference in Perth to vote No in September's referendum, saying:
The only thing that the SNP's plans guarantee is uncertainty in Scotland and permanent Tory government in what is left of the United Kingdom.
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Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
Windy this weekend with gales across northwestern parts of the UK. Rain spreading southeast.
Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."