A survey on the Campana-Peternell Conjecture
  In 1991 Campana and Peternell proposed, as a natural algebro-geometric extension of Mori's characterization of the projective space, the problem of classifying the complex projective Fano manifolds whose tangent bundle is nef, conjecturing that the only varieties satisfying these properties are rational homogeneous. In this paper we review some background material related to this problem, with special attention to the partial results recently obtained by the authors. 
Roberto Mu\~noz, Gianluca Occhetta, Luis E. Sol\'a Conde, Kiwamu   Watanabe, and Jaros{\l}aw A. Wi\'sniewski
math.AG