US Secretary of State John Kerry said that $127 million of non-lethal assistance already given to Syrian opposition is providing food, medical kits and support for local leaders.
He said: "For the last several months we have steadily increased our non-lethal assistance to more than $127 million and that aid is providing food now, medical kits now, and support for local leaders who are trying to lay the groundwork for a stable and a democratic future."
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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."