Biden raises concerns with Putin about Ukraine confrontation

Russian President Vladimir Putin visits the Coordination Center of the Russian Government in Moscow, Russia, Tuesday, April 13, 2021. The centre was set up as a line of communication with the whole of Russia for analysing and collecting information, promptly using big data and solving arising problems. (Mikhail Metzel, Sputnik, Kremlin Pool Photo via AP)

President Joe Biden participates virtually in the CEO Summit on Semiconductor and Supply Chain Resilience in the Roosevelt Room of the White House, Monday, April 12, 2021, in Washington. (AP Photo/Patrick Semansky)

BRUSSELS — President Joe Biden urged Russian President Vladimir Putin on Tuesday, in their second tense call, to “de-escalate tensions” following a Russian military buildup on Ukraine’s border.