The fuller context (which you should have posted) reads: "There seemed no straight walking for us leaders in this crooked lane of conduct, ring within ring of unknown, shamefaced motives cancelling or double-charging their precedents. " It is concentric rings of motives : direct and indirect personal, political, etc motives; greater and lesser loyalties.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.