India and China complete disengagement of troops along disputed Himalayan border

India and China have completed disengagement of troops along the disputed Himalayan border. Both struck a key patrolling agreement last week, putting both sides on a clear path to end a four-year military face-off. An Indian defence official said their forces have now been pulled from the last major friction points along the Line of Actual Control at Depsang and Demchok in eastern Ladakh. Here's a look at how tensions along the frontier started, and how it hurt ties between the nuclear-armed neighbours.