MORE COVERAGE INSIDE ON THE TRUMP ADMINISTRATION

Vice president tries to reassure jittery allies at Munich conference.

In addition to Trump’s latest plans, find more reports from the White House, including Vice President Mike Pence on NATO and Defense Secretary James “Mad Dog” Mattis’ views on the media,

Vice President Mike Pence was the latest in a trio of high-ranking Trump emissaries to tell European allies in person that the United States will steadfastly support NATO and demand that Russia honor its commitments to end fighting in Ukraine.

Some European leaders, however, remain skeptical of whether Pence and the U.S. secretaries of state and defense actually speak for President Donald Trump. And they worry those declarations might easily be swept away at the whim of the mercurial American president.

“We are waiting for actions,” said Polish President Andrzej Duda. “We only know what the media has reported and the statements that we’ve got. Now we are waiting for actions of the new government of Donald Trump.”

European countries along Russia’s border have been rattled by the prospect of deeper U.S.-Russia ties after Trump bucked the opinions of German Chancellor Angela Merkel and other world leaders by suggesting that sanctions imposed on Russia over its intervention in Ukraine could be eased in exchange for a nuclear arms deal.

Trump also raised eyebrows when he appeared to draw parallels between Russia and the U.S. when Bill O’Reilly of Fox News referred to Russian President Vladimir Putin as “a killer.” Trump replied: “We’ve got a lot of killers. What do you think? Our country’s so innocent?”

In the days before his inauguration, Trump referred to NATO as “obsolete” in an interview, but said the 28-nation alliance remained important to him. He has since tempered his language and stressed the importance of NATO during telephone conversations with multiple foreign leaders.

Pence, on his first overseas trip as vice president, tried to allay some of those fears in Munich on Saturday, reaffirming the U.S. commitment to NATO and promising that the U.S. would “hold Russia accountable.”

Michael Chertoff, U.S. homeland security secretary under President George W. Bush, noted that Pence’s comments were in line with similar assurances given by U.S. Defense Secretary Jim Mattis during a NATO meeting in Brussels this past week.

“They’ve all been consistent about the fact that there is a strong, deep and enduring commitment to Europe and to NATO and I think that message has been received,” Chertoff said.

The same day Mattis was in Brussels, U.S. Secretary of State Rex Tillerson met with his Russian counterpart in Bonn, Germany, saying afterward that Russia must adhere to a 2015 deal to end fighting between Ukrainian forces and Russia-backed separatists in eastern Ukraine.

But whether Trump intends to put Pence’s words into action remained a front-and-center issue at the Munich Security Conference.

German Vice Chancellor Sigmar Gabriel was pressed after Pence’s speech on whether he had doubts about Trump’s commitment to NATO.

“I have no doubts that the American vice president, and also the defense minister, will do everything to take responsibility within NATO as in the past, and I don’t think there is a big argument inside the American government,” said Gabriel, who also is Germany’s foreign minister. Asked about Trump’s commitment, he said, “Since I haven’t spoken to him, I can only say what I discussed with Mr. Pence — I did that and there are no doubts there.”

Pence on Sunday also paid a somber visit to the site of the Dachau concentration camp, walking along the grounds where tens of thousands of people were killed during World War II.

Pence was joined by his wife, Karen, and the couple’s 23-year-old daughter, Charlotte, as they toured the exhibits at the former concentration camp that was established by the Nazis in 1933 near Munich.

The vice president was accompanied by Abba Naor, a survivor of the camp, and other dignitaries as he passed through the wrought iron gate bearing the inscription, “Arbeit macht frei,” or “Work sets you free.” The Pences placed a wreath beneath the International Memorial at the center of the camp, toured the barracks and viewed the ovens inside the crematorium.

The Pences also stopped at religious memorials at the site and later attended a church service on the camp’s grounds.

More than 200,000 people from across Europe were held at Dachau, and more than 40,000 prisoners died there. The camp was liberated by U.S. forces in April 1945.

Former Vice President Joe Biden visited Dachau during a trip to Germany in 2015.

MATTHIAS SCHRADER / ASSOCIATED PRESS Vice President Mike Pence (left) and his wife, Karen, listen to a guide during a visit to the former Nazi concentration camp in Dachau near Munich, Germany, on Sunday, one day after he attended the Munich Security Conference.