Here is the explanation for the origin of the caricature for those not aware of it:
‘Mr. Recep Tayyip Erdogan pro-Islamist sympathies earned him a conviction in 1998 for inciting religious hatred.
He had publicly read an Islamic poem including the lines: “The mosques are our barracks, the domes our helmets, the minarets our bayonets and the faithful our soldiers…”’
news.bbc.co.uk