Many young people who travel to fight with militants in Syria and Iraq are recruited by extremist leaders taking advantage of their personal crises, a spokesman for an anti-extremist group has said.
Haras Rafiq. of the Quilliam Foundation, said that mosques teaching an extremist jihadi form of theology need to consider what it means to be both British and a Muslim.
More top news
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."