EN
The article presents an analysis of the most favoured nation (MFN) clause in the Energy Charter Treaty (ECT) as an instrument aimed at protecting relations between states and investors. The author examines the decisions of arbitration courts and compares ECT provisions with those included in bilateral investment treaties. Focusing on the recently much discussed question of resorting to the clause in order to safeguard more favorable jurisdiction rooted in another treaty, he points to a measure that could be helpful in resolving the ongoing dispute in the doctrine.