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A Security Guarantee for Ukraine?

How could this go wrong?

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Ben Domenech
Dec 16, 2025
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Semafor:

US and European officials agreed to provide Ukraine with NATO-style security guarantees, potentially overcoming a major hurdle to a flagging peace deal with Russia.

US President Donald Trump said a deal was now “closer than ever,” while German Chancellor Friedrich Merz said there was now a small but “real chance” at peace. More talks are expected this week in the US.

Kyiv appears to have dropped its bid to join NATO, but remains steadfast in its ambition to become an EU member, a move that US officials said would not be opposed by Moscow. However, Russian officials were skeptical that a peace deal may be agreed quickly: A Kremlin spokesperson said predicting a timeline was a “thankless task.”

WSJ:

The U.S. pledged to protect Ukraine from any future Russian attack, U.S. officials said, offering to support European security guarantees and seek Senate backing for Washington’s promised role, which it hasn’t yet publicly detailed.

The American pledge, which Russian officials are likely to dispute, came on the second day of talks in Berlin among the U.S., Ukraine and European leaders and top officials. It remains unclear to what extent Washington would militarily intervene.

The shift could lift one of the biggest obstacles to Kyiv signing up to a peace deal with Russia, but a bigger hurdle remains, over territory. Still unresolved is the issue of which contested territories Kyiv would keep and whether Ukraine would withdraw unilaterally from an area of the Donetsk region that it currently controls.

European officials have for months offered Ukraine security guarantees to deter a future Russian attack but they have stressed the need to have some form of U.S. help to backstop those plans. European officials have advised Ukraine to tread carefully in agreeing to other major concessions until they had locked in clear U.S. military support.

The U.S. officials said they had secured consensus with Ukraine on 90% of the issues being discussed after eight hours of face-to-face talks since Sunday between Ukrainian President Volodymyr Zelensky and President Trump’s Russia envoy, Steve Witkoff, and Jared Kushner, Trump’s son-in-law.

Related:

  • WSJ: After a Generation of Peace, Europe Tells Its People to Prepare for War

  • Politico EU: Frontline States Push EU Cash to Counter Russia Threat

  • National Interest: Why Europe Needs a War Economy

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