Only one in five Britons believe the UK Government should try to defeat the Islamic State in its entirety, a ComRes/ITV News poll has found.
The public is split about how the government should respond to the threat of the militants in Iraq and Syria, with 29% believing IS fighters should be stopped from making further gains.
Some 30% of Brits said the UK should not get involved in the conflict, preferring to leave the situation to run its course, in the poll of 2,042 British adults.
Little support was shown for offering asylum to Iraqis under threat with just 24% thinking Iraqi Christians should be allowed to come to the UK.
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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."