get maxmind's GeoIP dbase and install the apache module (mod_geoip API), then in htaccess:
GeoIPEnable On
GeoIPDBFile /path/to/GeoIP.dat
RewriteEngine on
RewriteCond %{ENV:GEOIP_COUNTRY_CODE} ^RU$ ###RUSSIA
RewriteCond %{ENV:GEOIP_COUNTRY_CODE} ^UA$ ###UKRAINE
RewriteRule ^.*$
http://www.gofuckyourself.com/ [L]