Military negotiators from Ukraine, Russia and the United States have agreed on how a potential ceasefire would function on the ground, including detailed mechanisms for monitoring compliance once fighting stops.  The two-day military talks in Geneva focused on how a ceasefire would work in practice – agreeing on key definitions, what would count as a violation, and how the ceasefire would be monitored as soon as it takes effect, a source familiar with the talks told CNN on Wednesday. JOIN US ON