What is this tree?

Hi, what is this tree?

Hmmmm... It looks suspiciously elm-ish.

Looking at your profile, you're from Istanbul. Look up Ulmus campestris

I doubt that it is an elm. It has opposite leaves.
Are the twigs square? Do the leaves smell when crushed? It will probably be impossible to identify until it blooms.
Iris

bonsaisr wrote:I doubt that it is an elm. It has opposite leaves.

Also, elms tend to have asymmetric leaf bases - not visible in this picture.

Are you sure the leaves are opposite? I can't see it clearly enough to say that. Look in the upper right corner of the first picture.

You've got a point, Russell! The leaves look opposite in the center of the picture, not so much in the upper right. We need a clearer picture, from the side, rather than top down.
Oliver

Still hoping you'll post some better pictures...