BERLIN, 13 April - RIA Novosti/Prime. GTS of Ukraine is the weakest link in the gas relations between Russia and the EU, said the head of "Gazprom" Alexey Miller. "Ukraine's gas transportation system is the weakest link, the weakest link, which is on today in our relationship. Ukraine's gas transportation system is fraught with the reality confrontational unusually high potential, "said Miller at the Symposium" Europe and Eurasia: towards a new model of energy security" "You have to understand that 90% of gas transit from Russia via Ukraine to the European Union - it was a gift of the Soviet Union Ukraine, which Ukraine received in early 90-ies. But when the gift begin to apply as a tool of manipulation - so in reality can't last, "added the head of" Gazprom ".