Biden’s Surreal and Secretive Journey into a War Zone

A related NYTimes article has this interesting aside:

Notably, the White House informed the Kremlin of Mr Biden’s impending visit before the president arrived, not as a diplomatic courtesy but for what Mr Biden’s national security adviser, Jake Sullivan, called “deconfliction purposes” — essentially, to avoid a Russian strike, accidental or otherwise. Mr Sullivan added, “I won’t get into how they responded.”