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.

Putin's Playbook' author Rebekah Koffler joined 'Fox & Friends First' to discuss why she believes Putin's 'in principle' approval of the ceasefire is not authentic and what a leaked document could reveal about Putin's long-term plan in Ukraine.

Russian President Vladimir Putin said Thursday that Russia agrees in principle with the U.S. ceasefire proposal, but the terms need to be worked out.