Of all the nations in the European Union, Sweden’s attitude toward immigration has been the most similar to Germany’s. It too welcomed immigrants with open arms. It too displayed a public outpouring of sympathy that made the headlines as the nation rallied to help these immigrants. Sweden took in more migrants per capita than any other nation in Europe—over 160,000 for 2015.

And, like Germany, Swedish police, government officials and news executives have been covering up mass sexual assaults by Muslim immigrants. Authorities have been reluctant to talk about migrant crime. Any negative news about these tens of thousands of migrants has been swept under the carpet.

Yet when it comes to recognizing the problems, Sweden is running slightly ahead of Germany. Now migrants are having to brave the Nordic winter in tent cities. Arson attacks on asylum centers are becoming common. The public is fed up with the migrant crime wave. The government knows it can no longer cope.

The result: Sweden was forced into a dramatic U-turn. The problems caused by these migrants were so bad that pro-immigration politicians were forced to admit they could no longer keep the door open.

“It pains me that Sweden is no longer capable of receiving asylum seekers at the high level we do today,” said Prime Minister Stefan Löfven in November. “We simply cannot do any more.”

Sweden’s Green Party deputy prime minister, Åsa Romson, cried as she announced the changes. “This is a terrible decision,” she said. But she did not quit the government, so she essentially supported that decision.

Sweden’s border used to be wide open. For 15 years, Scandinavians have been able to travel freely between Sweden and Denmark across the Oresund motorway and railway bridge. Travel has been so easy and reliable that many commute daily from Sweden into Denmark.

That era is over. Border checks are now imposing long delays for the first time in 15 years. It is no longer possible to catch a train into Sweden directly from Copenhagen’s main station. The checks have ended 60 years of passport-free travel between Sweden and Denmark.

Sweden’s leaders announced they will now do the bare minimum to accommodate migrants. “Sweden’s welcome mat now lies in tatters,” wrote the Washington Post. “Overwhelmed by the human tide of 2015, the center-left government is deploying extraordinary new border controls and slashing benefits in an unmistakable signal to refugees contemplating the long trek to Sweden in the new year: Stay out.”

Despite these new measures, the migrant crisis has already transformed Sweden’s politics.

In September 2014, the anti-immigration Sweden Democrats won 12.9 percent of the vote—making it Sweden’s third-most popular party. Even that result was considered shocking. In 2006, before the financial crisis hit, it won 2.9 percent of the vote—putting it in eighth place.

A YouGov poll on November 19 found that the Sweden Democrats would win 26.7 percent in an election. This fringe party, considered by many on the left to be extreme or far right, has come from nowhere to become the most popular political party in the country. Its nearest rival, the Social Democratic Party, polled at only 21.4 percent.

Since Sweden closed its borders, the Sweden Democrats’ popularity has backed down. It has consistently polled around 20 percent, which still puts it roughly neck and neck with Sweden’s traditional parties.

Germany is walking down exactly the same path as Sweden. At every turn, the two have addressed the migrant crisis in the same way. Sweden shows us what is coming soon to Germany. Except Germany’s response will have a far bigger effect on the world.

Germany has the largest population and the largest economy in Europe. It dominates the EU and also dominates the migrant crisis. Between September 2014 and September 2015, one third of all requests for asylum across the entire European Union took place in Germany.

This also makes it far harder for Germany to fix its migrant crisis. Sweden can take action unilaterally—Germany will have to deal with it on the EU level.

As 2016 begins, Germany’s response is already trending in the same direction as Sweden’s. In the first 12 days of 2016, Germany turned more immigrants back at the Austrian border than it did in all of 2015. Chancellor Angela Merkel’s beliefs on accommodating refugees have not changed, but the political climate, along with the simple practicalities of taking in so many people, is already forcing Berlin to transform its policy.

Meanwhile, Germany’s equivalent of the Sweden Democrats—the Alternative for Germany (AfD)—is surging to new heights in the wake of the Cologne attacks. A poll for Bild found that the AfD would win 11.5 percent of the vote if national elections were held today. The party has only run in the 2013 federal election, where it received 4.7 percent of the vote. It failed to reach the 5 percent minimum of votes required to receive a seat. But in less than three years, its popularity has more than doubled.

This doesn’t mean Germany will follow Sweden’s every move. But its Nordic neighbor’s example proves that Germany’s current efforts are likewise unsustainable. Just the practical difficulties of taking in so many migrants will force a radical shift.