Bensaïd focuses on the third question in his outline: How to establish a new international? He discusses the first five years of building the FI. For Trotsky, founding of a new international was less a declaration than forming a unity of different forces and trends. Bensaïd depicts the situation of the forces in the 1933 and the situation of the Left Opposition internationally in the 1933. In the second part of the recording, he discusses the fusions. He describes the "modern centrism" concept of Trotsky - between social democracy, Stalinism, and revolutionary Marxism. He then takes up the question of the united front, the inclusion of mass organisations and agreement on a general political line. He discusses examples of 68 France, and Spain in the end of 1970s.