In this issue the lecture course «An Economic Analysis of Russian Antitrust Policy in the International Perspective» is continued. The issue contains three lectures. The first lecture reminds the impact of horizontal and vertical mergers on the profit of insiders and outsiders and consumer surplus. The next lecture is devoted to the legal base and methods of ex-ante merger review in the US and European competition policy.  The last lecture depicts the scale of mergers in Russia and their impact on competition. New rules on pre-merger notification according to «On the protection of competition» (2006) law are also characterized. It can be concluded preliminary that after the new law enactment, system of pre-merger notification in Russian Federation improved substantially.