When Russian President Vladimir Putin ordered up to 200,000 soldiers into Ukraine, his aim was to sweep into the capital, Kyiv, in a matter of days. He wanted to overthrow the pro-Western government and return Ukraine to Russia's sphere of influence.

The last time Ukraine signed a peace accord with Russia, 10 years ago, it brought only sporadic violence, mounting distrust, and eventually full-scale war. Here’s what we can learn from that history.