I'm trying to get an idea of Drinfeld's Zastava space. It seems to be an infinite-dimensional version of the flag variety, for affine Lie algebras.

But, first of all, why is it called Zastava (Застава)? Sadly I don't understand Russian and I don't understand the connotation. Googling gave me this Wikipedia article about a car company first. But I don't think a car company has much to do with these spaces, or does it?

Apparently it means "outpost" in Russian. But why an outpost? Drinfeld seems to be Ukrainian (again, from Wikipedia) and zastava means "pledge"?

Is it an outpost to a greater understanding of these spaces? Is it a pledge of mathematicians to understand more???

flagsaspikes.– Wadim Zudilin Dec 30 '10 at 13:47