National Leaders Tree

I came across this spot the object illusion, much like many others, but really good. Not only do you have to spot all the faces in this tree below, you also have to guess who they represent. Since the image is called “National Leaders Tree“, you are right in thinking that the faces represent leaders of the big countries like America, Russia, England, Yugoslavia etc. How many faces can you spot?

After you've found them all, you can check National Leader Tree Solution.

How many faces do you see?