Yes, this is a big news. I wonder what is his deal?
- Did he notice that Russia doesn't have money for this war?
It wasn't a big war and big expense, so probably the money is not a deal breaker. Besides Assad will pay back later when he can. However, maybe Putin figured that Assad never will unite Syria again, and will never pay back?
- Did he make a deal with US?
There was a very recent meeting on the highest level between these two. What deal it could have been?
- Did he make a deal with Saudi Arabia about freezing oil production, and for this he promised not to bomb Sunni Arabs in Syria anymore?
It is of highest priority for Putin to see oil prices go up very soon. Otherwise he is facing unrest in Russia. This could have been his main mission there in Near East.
-Did he make a deal with EU to secure Assad presidency during peace talks? Or some other deal, for example not to push more Syrians as refugees into Turkey and consequently Europe?
I didn't hear of any such deal by involved parties, yet.
Whatever it is, whatever the deal was and with whom, it was extremely unexpected move by Putin to withdraw his troops from this conflict.
sorry but you are blind again, Notice that,
Turkey
From West is the sourrounded Greece, with Nato ships at Aegean,
from East who? no Strong Iraq, no Strong Armenia,
from South No strong Syrria,
from North? Georgia, who is not so well with Putin,
so Erdogan is playing alone at the arena, having against him, only PKK, a bunch of brave but rebels,
and if negotiations for a new treaty don't start soon, you might see entrance of Turkey there,
and Putin is not so fool, as some want him to be,
as for refuggees, yes it is funny, he is even responsible for the Morrocan who enter Greece through Turkey,
come on man, I am not saying he is saint, but surely he is not the only one to blame as αποδιοπομπαιος τραγος, the sacrificed goat upon wich we put all sins of the world,
PS
at 1970's H Kissinger visit Turkey, after that, few years later a new dogma was at Turkey, it was Ozalism, at his book 'Strategical depth' he said,
there will be no war with Greeks, cause we sent 1 million muslims there, and in ten years will be five, so no need to make war with them,
and he was right, only the muslims thrown to Greece fled to Central Europe, so Kissinger's/Ozal's plan sunk,
and needed Austria and Visengrad and Nato to fullfill the plan sourounding Greece so the muslim refuggees stay at Greece, and not fled,
as you see today's policies were designed 40 years before,
PS2
yes Visengrad will manage to make the 4rth Carlomagnean state, only if it forces W Ukraine to split,