PARIS (Reuters) - France, Germany and Luxembourg voiced disquiet on Saturday over U.S. President Donald Trump’s decision to limit immigration and refugees from some Muslim countries, with Berlin and Paris also reaffirming a firm line on Russian sanctions.

French Minister of Foreign Affairs Jean-Marc Ayrault addresses delegates at the opening of the Mideast peace conference in Paris, January 15, 2017. REUTERS/Thomas Samson/POOL

Speaking at a joint news conference in Paris with his German counterpart Sigmar Gabriel, French Foreign Minister Jean-Marc Ayrault said many of Trump’s decisions worried the two U.S. allies, including new immigration restrictions.

Trump on Friday signed an executive order that will curb immigration and refugees from some Muslim-majority countries and he separately said he wanted the United States to give priority to Syrian Christians fleeing the civil war there.

“This can only worry us, but there are many subjects that worry us,” Ayrault said, adding that he would soon invite his future American counterpart Rex Tillerson to Paris to explain Europe’s interests, values and vision of the world.

“Welcoming refugees who flee war and oppression is part of our duty,” Ayrault said.

Germany has taken in more than one million refugees and migrants, mainly from the Middle East, since 2015.

Although traditionally open to asylum seekers, France has taken in far fewer refugees than Germany since the migrant crisis erupted. Some in the French government, mostly ex-premier Manuel Valls, criticizing Berlin’s open-door policy, as has Trump.

“The United States is a country where Christian traditions have an important meaning. Loving your neighbor is a major Christian value, and that includes helping people,” said Germany’s Gabriel, who was on his first trip abroad since his nomination as foreign minister.

“I think that is what unites us in the West, and I think that is what we want to make clear to the Americans.”

Luxembourg Foreign Minister Jean Asselborn said Trump’s order would have negative consequences.

“The American president is dividing the Muslim world into good and evil with this,” Asselborn told the Tagesspiegel German newspaper. “The decision is also bad for Europe because it will increase the Muslim world’s mistrust and hatred of the West.”

The two countries also reiterated their position on Russian sanctions, saying they could only be lifted if progress was made in the peace process for eastern Ukraine, where a pro-Russian separatist insurgency began in 2014.

They joined British Prime Minister Theresa May in cautioning Trump against premature moves on the issue.

“Let’s not forget there was a war, that Russia sought to take over parts of Ukraine,” Ayrault said.

Trump said on Friday he was only in the early stages of considering whether to lift U.S. sanctions on Russia, but insisted he wanted to follow through on his campaign pledge to pursue better relations with Russia.

The French and German ministers also said the United Nations remained the best framework to lead peace talks about Syria in the aftermath of Russian-led efforts in the Kazakh capital Astana that some diplomats say might undermine the UN process.

Separately, Germany and France are also continuing to work on creating a joint tactical airlift pool of Lockheed Martin Corp C-130J military transport planes, a spokesman for the German defense ministry said on Saturday.

He could not confirm a report in Der Spiegel news magazine that the two countries expected to complete work on the deal and present it to U.S. Defense Secretary James Mattis at a meeting of NATO defense ministers in Brussels next month.

The magazine said German Defence Minister Ursula von der Leyen hoped to present the joint airlift as evidence of Germany’s willingness to contribute more to NATO.

Trump has criticized many European countries for not meeting a NATO target of spending 2 percent of gross domestic product on defense.