  This paper is an extended version of the talk by B. Nicolescu at the XLVIII
International Symposium on Multiparticle Dynamics (ISMD2018) at Singapore, 3-7
September, 2018. Theoretical basis and history of the Froissaron and Maximal
Odderon (FMO) approach for elastic $pp$ and $\bar pp$ scattering is presented.
Precise formulation of the FMO model at any momentum transfer squared $t$ is
given. The model is applied to description and analysis of the experimental
data in a wide interval of energy $\sqrt{s}$ and $t$. The special attention is
given for the latest TOTEM data at 13 TeV, both at $t=0$ and at $t\neq 0$ and
to their interpretation in the FMO model. It is emphasized that the last TOTEM
results can be considered as clear evidence for the first experimental
observation of the Odderon, predicted theoretically about 50 years ago.
