The issues of security in the South Caucasus as well as economic and political problems available in the region will be discussed at the "South Caucasus in 21-th century: problems and prospects" international conference opening in Tbilisi today, ITAR TASS reported. Politicians and scientists from Armenia, Azerbaijan, Iran, Russia, Turkey, US, Japan, China and as well as representatives of a number of international organizations - UN, NATO, OSCE, WB, IMF and BSECO - are expected to take part in the forum.