He tweeted that he spoke with South Korean President Moon Jae-in about "Rocket Man", an apparent reference to North Korean leader Kim Jong-Un. Long gas lines forming in North Korea.
Trump slammed Clinton over her new book earlier this week too, tweeting that she "blames everybody (and every thing) but herself for her election loss".
An official White House readout of the call released shortly after the president's tweet said Mr. Trump and the South Korean president "committed to continuing to take steps to strengthen deterrence and defense capabilities and to maximize economic and diplomatic pressure on North Korea".
The overall message from the Twitter spree seemed to be that the economy and military were getting stronger, which the president summed up with one of his own tweets. And another shows an all-red map of the U.S. "Keep it up Libs". He then retweeted an image of a train wearing a giant Make America Great Again hat.
Donald Trump continued to taunt his former presidential rival in a Sunday morning tweet storm, retweeting an online meme that suggested a golf ball hit by the president made Hillary Clinton fall to the ground. The post included the hashtag #CrookedHillary.
"Important meetings and calls scheduled for today", Trump tweeted.
The GIF of Trump hitting Clinton is reminiscent of the violent anti-CNN clip Trump retweeted in July.
Trump attacked Clinton directly last Wednesday in a pair of Twitter posts. "His Twitter bio is filled with the hastags "#Trump.