
US President Donald Trump leaves the stage at the NATO summit in The Hague.
© picture alliance / REUTERS | Yves Herman
Foreign and Security Policy
Trump’s foreign and security policy has become increasingly unpredictable. Trump is raising doubts about alliances and partners in Asia and Europe, and he is more or less openly casting doubt on US military support and security guarantees. Uncertainty is growing, particularly among partners such as Ukraine and Taiwan, which are heavily dependent on American military support. At the same time, Trump has repeatedly raised expectations about his abilities to resolve conflicts with antagonistic regimes such as Russia and China, but also Iran and North Korea. He continues to make provocative statements about US territorial ambitions in Canada, Greenland, Panama, and Gaza.
The foreign policy elites of both parties continue to see the rise of China as a key strategic challenge – a perception reflected in Trump’s trade war with the country. However, it is unclear whether, and under what conditions, Trump would be prepared to de-escalate relations with China. In the Middle East, the Trump administration is unconditionally on Israel’s side. The military strikes against the Houthis and Trump’s decision to bomb Iran’s nuclear facilities show that this administration has not completely renounced the use of military means in the region either. Trump relies on close economic relations with the Gulf states without preconditions. Relations with Iran remain the linchpin of US Middle East policy, as underlined by the intervention in the war on the side of Israel.
Publications
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Positioning the Anti-Coercion Instrument in the Greenland Crisis
The Americas Research Division, Working Paper No 01/2026, January 2026, 7 pages -
Grönland: „Hier spielt Trumps Biografie als Immobilienunternehmer eine Rolle“
Amerika-Experte Lohmann zieht eine düstere Bilanz – und nennt zwei Faktoren, die für den US-Präsidenten sehr gefährlich werden könnten.
Interview mit Gudrun Büscher, in: Berliner Morgenpost, 18.01.2026. -
Systemsprenger – Donald Trump und die Erosion der Demokratie in den USA
SWP-Studie 2026/S 02, 16.01.2026, 36 Pagesdoi:10.18449/2026S02
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Dänemark warnt vor NATO-Bruch wegen Grönland
US-Präsident Donald Trump will Grönland – notfalls mit Gewalt. Dänemark warnt: Eine Annexion würde das Ende der NATO bedeuten. Diese Woche treffen sich die Außenminister beider Länder. Wie ernst ist die Drohung – und wie stabil ist das Bündnis noch?
Interview mit Thilo Jahn, in: Deutschlandfunk Nova, 12.01.2026. -
A world in crisis: Can Europe cope without the US?
Interview von Marco Overhaus, in: Deutsche Welle, 10.10.2024 -
Europe and the End of Pax Americana
Transatlantic Relations Must Be Put on a New Footing, Regardless of Who Wins the US Elections
SWP Comment 2024/C 45, 02.10.2024, 7 Pagesdoi:10.18449/2024C45