I'm trying to buy a Brink game on Steam, but when I click a Store Page link, the page says "This item is currently unavailable in your region".
I'm currently in Ukraine. Is this a permanent issue or will it be fixed?

P.S.: I successfully played the game on this free weekend and wanted to buy it, but can't because the issue above.

You might want to take this to Steam support, or maybe the Splash Damage forums... you won't get any official help here.