Based on the search results from February 18, 2026, here are the three most significant world news stories:

1. US-Iran Nuclear Negotiations Advance With “Guiding Principles”

The United States and Iran reached guiding principles during trilateral talks, marking progress in nuclear diplomacy despite ongoing tensions.[1] Iran’s foreign minister reported good progress compared to earlier meetings, though positions remain distant on key issues.[1] Discussions are expected to resume in approximately two weeks to address remaining gaps.[1]

The negotiations occurred amid heightened military posturing: Iran temporarily closed portions of the Strait of Hormuz—which carries 20% of the world’s oil—for live-fire military drills, firing missiles toward the waterway.[1] This strategic chokepoint closure underscores the geopolitical stakes, as disruptions could significantly impact global energy markets and economic stability.

2. Ukraine-Russia Peace Talks End in Stalemate in Geneva

US-mediated negotiations between Ukraine and Russia concluded their first day in Geneva on February 17 with no breakthrough.[2] President Trump pressed Kyiv to accelerate deal-making to end the four-year conflict, but the talks resulted in a stalemate.[2]

The diplomatic efforts face immediate obstacles: Russia conducted overnight airstrikes across Ukraine, severely damaging the power network in the southern port city of Odesa, leaving tens of thousands without heat and water, according to President Zelensky.[2] This continued military escalation during peace negotiations suggests fundamental disagreements persist between the parties on core issues.

3. Meta CEO Testifies in Landmark Addiction Trial

Meta CEO Mark Zuckerberg testified in a significant lawsuit accusing Instagram of being designed to be addictive for children and teenagers.[4] This case represents a major legal challenge to social media business models and could have far-reaching implications for how technology companies design platforms targeting younger users.

The trial addresses growing concerns about technology’s impact on youth mental health and development, potentially influencing future regulatory frameworks and corporate accountability standards in the tech industry.