• Syria's main armed opposition group, the Free Syrian Army (FSA), is losing fighters and capabilities to Jabhat al-Nusra, an Islamist organisation with links to al-Qaida that is emerging as the best-equipped, financed and motivated force fighting Bashar al-Assad's regime. Evidence of the growing strength of al-Nusra, gathered from Guardian interviews with FSA commanders across Syria, underlines the dilemma for the US, Britain and other governments as they ponder the question of arming anti-Assad rebels.
Israel has warned the US that Russia is about to sell advanced ground-to-air missile systems to Syria, in a deal that would significantly boost the regime's ability to stave off intervention in its civil war, according to the Wall Street Journal. US officials told the paper they are analysing the information Israel provided about the suspected sale of S-300 missile batteries to Syria, but wouldn't comment on whether they believed such a transfer was near.