This book extends Pontryagin's stochastic maximum principle to systems driven by fractional Brownian motion . It explores two main topics. The first deals with a risk-neutral optimal control problem, where the convex perturbation method is used to derive optimality conditions. The second topic focuses on risk-sensitive control, formulated via backward stochastic differential equation . Here, the goal is to minimize a convex disutility function of cost. The study links risk-neutral and risk-sensitive formulations, establishes the equivalence between exponential utility and quadratic BSDEs, and...