From an Inside the Times column by Emmett Lindner  headlined “Reporting on the Ground in Ukraine”:

As Russian troops are dispatched to Ukraine’s borders, the threat of a major assault on the country continues to escalate. Ukrainian soldiers stand guard at possible points of invasion, including sections of irradiated zones near Chernobyl. The United States has sent troops to NATO countries and has pulled most diplomats from Kyiv, Ukraine and world leaders are in contact with President Vladimir V. Putin of Russia to try to negotiate peace in the region. In a one-hour phone call on Saturday, President Biden warned Mr. Putin that an invasion would result in “swift and severe” costs.