The president "rejoices over the misery that he thinks he has imposed on ordinary Iranians," Iranian Foreign Minister Javad Zarif wrote on Twitter.
"Other tools have somehow disappeared from U.S. diplomacy's arsenal," Russian Foreign Minister Sergei Lavrov said.
An investigation followed the State Department's withdrawal of an award to an investigative journalist who had criticized President Donald Trump.
After Lebanon's President Michel Aoun followed up talks with Secretary of State Mike Pompeo with a trip to Russia, Lebanese Parliament Speaker Nabih Berri said the U.S. visit will "be eventually forgotten."
"Let's start with the fact that instead of solving Middle East peace, Jared nearly put us into a war in the region," Vicky Ward, author of "Kushner, Inc.," alleged.
Pompeo's joke about Trump firing him on Twitter was in reference to his predecessor Rex Tillerson, who the president dismissed in a tweet last March.
"We need to carefully plan the overall development of the islands and reefs based on their different functions, taking into account their complementary relationship," a Communist Party official said.
"We also advise that the United States take a hard look at its own domestic human rights record, and first take care of its own affairs," Chinese spokesperson Lu Kang said.
"He said he would denuclearize...," Pompeo said. "Now we need to figure out how to do it."
A Finnish journalist who has braved harassment and death threats for her work covering Russian propaganda was told her nomination was in error.
Explaining the failure to reach an agreement with North Korean leader Kim Jong Un, President Donald Trump told reporters, "Sometimes you have to walk."
The U.S. has been accused alongside Saudi Arabia of violating end user agreements to illicitly transfer weapons to insurgents in Syria.
"I don't put a lot of stock in the things Mr. McCabe said," Secretary of State Mike Pompeo said on NBC's "Today," dodging repeated questions about what he knew as CIA director.
Pompeo tells the former White House press secretary that he likes listening to AC/DC and picks the movie "Bohemian Rhapsody" as his favorite for the Oscars this year.
"She does not have any legal basis, no valid U.S. passport, no right to a passport, nor any visa to travel to the United States," Pompeo said in a statement.
In January, Daniel Coats gave a briefing on North Korea, Iran and ISIS that many said was at odds with the Trump administration's positions. Now he might be replaced.
"Pushing back" on Iran is key to solving the region's problems, Secretary of State Mike Pompeo said.
"Russia has a last opportunity to take the responsible path," NATO's secretary-general warned.
The trip is a sign of the Trump administration's commitment to NATO, despite President Donald Trump's comments that questioned the value of the Western military alliance.
The Russian foreign minister raised concerns that Washington was "dramatically" lowering the "threshold for the use of nuclear weapons" while increasing "the risk of a nuclear conflict."
Amid an escalating political and social crisis in Venezuela — where 35-year-old opposition leader Juan Guaido has energized the masses — U.S. Secretary of State Mike Pompeo and several European nations announced they support Guaido in his fight to upend dictator Nicolás Maduro.
Maduro is blaming the challenge to his leadership on President Donald Trump.
North Korea will "wait with patience and in good faith and, together with the U.S., advance step by step toward the goal to be reached by the two countries," Kim Jong Un said.