No honeymoon for Merz as the new German government already faces domestic constraints

Although Friedrich Merz has big ambitions for Germany’s international role, significant domestic pressures remain and will constrain his government’s room for manoeuvre.

Expert comment Published 16 May 2025 Updated 6 June 2025 4 minute READ

After three years of an inward-looking German government preoccupied with infighting, new chancellor Friedrich Merz has promised that ‘Germany is back’ – both in Europe and on the international stage. His first days as chancellor were set to emphasize this ambition, with visits to Paris, Warsaw, Brussels and Kyiv, the latter together with the leaders of France, Poland and the UK. 

Although Merz won a second round of voting on the same day, the message is clear: his domestic power base is fragile and old certainties about the stability of German politics are gone.

The new government’s coalition treaty promises a stronger, more integrated German foreign and EU policy, enabling it to play a bigger role in European security and deterrence against Russia.

But the vote to formally appoint Merz as chancellor was much more dramatic than anticipated. He was the first chancellor candidate in Germany’s post-war history to fail to get the required absolute majority in the Bundestag, despite his CDU/CSU–SPD coalition holding such a majority.

Although Merz won a second round of voting on the same day, the message is clear: his domestic power base is fragile and old certainties about the stability of German politics are gone. 

Strong domestic pressure 

For Germany’s partners, this raises the question of how much room for manoeuvre Merz and his government will have in foreign, security and defence policy. There are three key domestic constraints.

First, the coalition between his CDU/CSU and the SPD is, as Merz publicly acknowledges, a ‘functional coalition’ (‘Arbeitskoalition’) without a major political project. In contrast to previous iterations of the so-called ‘grand coalition’ – bringing together the two major parties that have dominated Germany’s post-war politics – the current coalition has a razor-thin parliamentary majority at below 52 per cent. Their main motives for working together are a lack of alternatives and a sense of responsibility, but they have significant differences when it comes to priorities and policy positions. 

Second, in a politically fragmented Germany, the new coalition lacks a majority in the second chamber, the Bundesrat, which is composed of the regional executives. Although all regional governments are (for now) headed by either the CDU, CSU or SPD, there are 12 different formations that include smaller parties from across Germany’s political spectrum, except the far-right extremist Alternative für Deutschland (AfD). Although less important for foreign policy, most major laws in Germany including on issues like migration requires the approval of this diverse Bundesrat. 

Third, and most notably, Germans have little interest in a honeymoon period with the new government, with falling approval ratings even before formally taking office, especially for Merz and the CDU. In contrast, the AfD keeps rising in the polls, topping some of them as the single largest party ahead of the CDU/CSU with up to 26 per cent. 

This puts extra pressure on Merz, who – although more right-wing than Angela Merkel – represents traditional conservative thinking within the CDU and firmly rejects any form of cooperation with the AfD at any level. Even with the next general election four years off, continued high polling for the AfD would put tremendous internal party pressure on Merz (and, to a lesser degree, all democratic parties in Germany), as a regional election somewhere is always around the corner. 

Which policy areas will be most affected?

For Germany’s foreign, security and defence policy, these domestic pressures mean that Merz will have to work hard to keep his coalition together. Maintaining cohesion within his own party is likely to be particularly challenging, as the CDU now stretches from the more liberal wing of Angela Merkel’s reign to more conservative parts. Its internal cohesion will also be continuously tested by the AfD.

Consequently, the new German government’s room for manoeuvre will differ across policy lines, depending on the cohesion (or lack thereof) of Merz’s party and coalition, whether the AfD is managing to exploit public resentment, and the government’s constitutional decision-making powers. 

Based on these criteria, there will likely be little or no change to the traditional pillars of German foreign, security and defence policy: its membership and support for the EU and NATO. 

Given recent fluctuations in US policy, there is broad support within the new coalition and with the German public for taking on more responsibility for European defence, including strengthening the European pillar of NATO and increasing support for Ukraine. Meanwhile, the recent change to the ‘debt brake’ gives the government the fiscal space to increase defence efforts without needing opposition support. 

There is also broad coalition support for Germany’s close relationships with European partners and revival of the partnerships with France and Poland, as well as the planned UK–Germany friendship treaty.

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However, Merz will face more resistance in other areas. One is the level of concrete military support for Ukraine. To avoid the previous government’s often difficult public discussions about individual weapon systems, the Merz government has decided to keep future weapon deliveries confidential. Yet, just a day after this decision, the leader of the SPD group in the Bundestag publicly opposed delivering the long-range Taurus missile, casting doubt on Merz’s options for supporting Kyiv.

The real Achilles heel, as elsewhere in Europe, is migration.

German participation in a potential ‘coalition of the willing’ deployment to Ukraine in case of a ceasefire could also be tricky, as it would both be highly controversial in Germany and require the approval of the Bundestag. 

Another difficult area will be Germany’s role in the upcoming EU multiannual budget negotiations and discussions about potential joint borrowing for defence. As Merz has already significantly changed the CDU/CSU domestic stance on fiscal policy and the debt brake – for which he has been widely accused of breaking election promises – his political capital to do so at the European level has shrunk rather than grown.

The most significant pressure on the new government’s room for manoeuvre will be on migration. During the election campaign, Merz and the CDU/CSU promised a real change in migration policy –  Merz even risked a highly controversial snap vote on tightening migration rules that could only have passed with the support of the AfD. 

But within the first week of taking office, migration policy caused rifts in the coalition and tension with Germany’s neighbours, as the new interior minister ordered tighter border controls that are potentially in breach of EU law. As such, migration is the area with the biggest risk of a split between the CDU/CSU and the SPD – and the policy area which the AfD could benefit the most from.  

For Germany’s partners, the hiccup at Merz’s election as chancellor should therefore be interpreted as a signal that significant domestic limits will persist. While Merz can develop into a European leader in the EU and NATO, vis-à-vis the US and in supporting Ukraine, there are persistent limitations for Germany’s concrete military support for Ukraine and its role in European fiscal debates.

But the real Achilles heel, as elsewhere in Europe, is migration. A hardening stance in the CDU/CSU and rising support for the AfD is pushing the German government to clamp down hard and fast. This approach will stretch the coalition to its limits, create tensions with Germany’s neighbours, and could bring Germany into clashes with EU law.