Think there are some 72nd scale Russian tankers which would work.
http://www.tracks-n-troops.com/1-72%20figures.htm
You can also use Wargame figures in 20mm.
http://www.warrioronline.demon.co.uk/20mm/20modern.htm
http://www.stonewallfigures.co.uk/shop/index.php/page,shop.browse/category,Desert+Fury+-+Karbul+to+Bahgdad/category_id,673fc49603cfd9b8ca79818db0a67d1d
http://www.shqminiatures.com/Ranges/Gulf/Gulfmain.php?UID=2005062722462267.182.197.241
http://www.webspawner.com/users/libmins/
and many others, check here
http://www.wargamesdirectory.com/html/periods/view.asp?ID=33
and some scenery:
http://www.stonewallfigures.co.uk/shop/index.php/page,shop.browse/category,Modern+Middle+Eastern/category_id,5732957d282f09d80a8c23cc5039ff67