  We give an unified framework to solve rough differential equations. Based on
flows, our approach unifies the former ones developed by Davie, Friz-Victoir
and Bailleul. The main idea is to build a flow from the iterated product of an
almost flow which can be viewed as a good approximation of the solution at
small time. In this second article, we give some tractable conditions under
which the limit flow is Lipschitz continuous and its links with uniqueness of
solutions of rough differential equations. We also give perturbation formulas
on almost flows which link the former constructions.
