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1. Ukraine
On June 23, 2022, the European Council granted Ukraine the status of a candidate for accession to the EU. Also, Ukraine became a de facto member of NATO. In both, Ukraine has not become a full member.
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2. Serbia
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3. Turkey
Turkey joined the NATO alliance in 1952.
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4. Sweden
In 1995, Sweden joined the EU.
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5. Iceland
Iceland was a founding member of NATO in 1949.
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6. Romania
Romania joined the EU in 2007 and NATO in 2004.
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7. Estonia
Estonia joined the EU and NATO in 2004.
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8. Cyprus
Cyprus joined the EU in 2004.
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9. United Kingdom
The United Kingdom was a founding member of NATO in 1949, and was a part of the EU, but left in January 2020.
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10. Malta
Malta joined the EU in 2004.
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11. Switzerland
Switzerland is neutral.
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12. Croatia
Croatia joined the EU in 2013. Croatia joined NATO in 2009.