  We examine the dynamics of neutral black rings, and identify and analyze a
selection of possible instabilities. We find the dominating forces of very thin
black rings to be a Newtonian competition between a string-like tension and a
centrifugal force. We study in detail the radial balance of forces in black
rings, and find evidence that all fat black rings are unstable to radial
perturbations, while thin black rings are radially stable. Most thin black
rings, if not all of them, also likely suffer from Gregory-Laflamme
instabilities. We also study simple models for stability against
emission/absorption of massless particles. Our results point to the conclusion
that most neutral black rings suffer from classical dynamical instabilities,
but there may still exist a small range of parameters where thin black rings
are stable. We also discuss the absence of regular real Euclidean sections of
black rings, and thermodynamics in the grand-canonical ensemble.
