"He had to deal with Whabbists"
Who?
The word is Wahhabi.
"I suspect the destruction of Aleppo has been influenced by those bombings."
And I suspect Putin remembers Chechens were hitting back then because Russian military was brutally destroying their homeland for having refused to be part of Russian federation after Soviet Russia collapsed. Not for no reason.
"Against that background it is seems that Erdogan wants to embrace islam and turn Turky from a secular state into an islamic government."
Oh there is so much wrong with this sentence 
(1) There is no Russian/Chechen "background" for Erdogan's plans
(2) If Erdogan wants you gone, you get thrown into jail with no charge, for years. Not executed publicly by a lone gunman.
(3) Erdogan has been Islamicising Turkey for over a decade. But to you, he only just "seems" like he wants to embrace Islam & turn Turkey from secular to Islamic state now? Really?
Where have you been when he reversed the ban on headscarves for school children, opened thousands of schools for imams, changed education system to allow their graduates to enter universities, decapitated the army on false coup accusations and replaced all top brass with his people?
"Erdogan may condenm the shooting in public. However, the murderer appears to be a muslim claiming to stand up for the defence of muslims against non muslims. This complicates matters."
Only if you are completely ignorant of the fact that a powerful Islamist organization has been battling Erdogan's group for power.
FFS are you really so clueless that you think everyone shouting Allahuakbar are on the same side?