It was reported earlier by the White House this morning that Trump called Vladimir Putin.
Now, according to the AP, the Kremlin is saying that call was to congratulate Putin on his overwhelming re-election victory:
BREAKING: Kremlin: Trump has called Russian President Vladimir Putin to congratulate him on re-election.
— The Associated Press (@AP) March 20, 2018
They also reportedly discussed other issues:
Kremlin says Trump called to congratulate Putin on his election victory, discussed cooperation on strategic stability, arms control, fighting terrorism, and holding a summit meeting
— John Harwood (@JohnJHarwood) March 20, 2018