coley, I'm learning on my feet, I make no pretence to be an expert. I get information & analysis from this thread & other online resources. Here's the three salient points with some links from a variety of (mostly reactionary) perspectives, with a heavy disclaimer - I'm supposed to be working, I just had a quick go on the google & some of the links may be rotten nonsense.
1) Erdogan's cordial arrangement with Assad goes back to 2008 - a sample
here. The switch to support for the opposition appears pragmatic & opportunistic - Assad's brutal response to the revolution will have been received negatively by Turkish citizens, & events in Egypt & Libya could have suggested Assad would fall. Interesting quote from Erdogan -
'We cannot be impartial and those who are impartial are eliminated'. (picture shows Erdogan using a Muslim Brotherhood hand sign)
2) Erdogan's support for the Syrian Muslim Brotherhood, & the similarities between his party & the muslim brotherhood are well documented - a sample
here about general Turkish support for MB,
here for Turkish support/hosting of the MB-founded Syrian National Council (in exile).
3) The idea of a regional 'Sunni Crescent', running from Cairo to Ankara via Gaza, a counterpoint to Iranian-Shia Crescent influence, has been discussed widely.
Seymour Hersh discusses it as far back as 2007 - and labels it as a US-led/supported plan to support its allies Saudi & Israel who view Iran as an existential threat. There's tension within this grouping as feudal theocracy Saudi fears Turkish support for the (quasi) democratic Muslim Brotherhood. Erdogan & his influential Foreign Minister Davutoglu feature in most references to the Sunni Crescent, including this from influential neo-con/neo-liberal magazine
The National Interest -
"A new Middle East is about to be born," Turkish foreign minister Ahmet Davutoglu recently stated before the Turkish parliament that "we will be the owner, pioneer and the servant of this new Middle East."
Any use?