Ukrainian President Zelensky said that Putin has Approved an Invasion of Ukraine

U.S. Warns of Invasion near Kharkiv (though there have been similarly urgent warnings in the past).

Dnipro, Kharkiv, Odesa Airports pausing Arrivals and Departures

Commentary on stress in Kyiv

Ukraine declared 30-day state of Emergency, mobilization of reserves

Ukraine requests urgent meeting of UN Security Council

Russian Western district hospitals have apparently cancelled hospital admissions, presumably in preparation for war casualties.