Key developments on. Feb. 12: * Trump holds talks with Zelensky following his 1.5-hour-long conversation with Putin * 'Restoring Ukraine's pre-2014 borders is unrealistic objective,' Pentagon chief says * Coordinating allied support — Umerov lists Ukraine's priorities at Ramstein-format summit * Europe faces 'total' Russian occupation without Ukraine's army, Zelensky says * Ukraine's SBU