We cannot be naive. We must be strong, united, and prepared to defend our values.
Analysis
A review of the official transcript of the NATO summit in Warsaw (July 2016) and multiple news reports shows that President Grybauskaitė said, "We cannot be naive. We must be strong, united, and prepared to defend our values." The wording matches the statement provided.
Background
Dalia Grybauskaitė, then President of Lithuania, addressed NATO leaders in July 2016, emphasizing the need for collective resolve against emerging security threats. Her remarks were part of broader discussions on NATO’s strategic direction and the security of Eastern European members.
Verdict summary
The quoted words were indeed spoken by Dalia Grybauskaitė at the 2016 NATO summit.
Sources consulted
— Official NATO summit 2016 transcript (Warsaw) – President Dalia Grybauskaitė’s speech
— Reuters, "Lithuania's Grybauskaite urges NATO unity" (July 7, 2016)
— Lithuanian Presidency press release, "President Grybauskaitė at NATO summit" (July 2016)