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International diplomacy and geopolitics The most prominent diplomatic achievement of 2015 was the Joint Comprehensive Plan of Action (JCPOA), the Iran nuclear agreement reached in July between Iran and the P5+1 (United States, United Kingdom, France, Russia, China, plus Germany). The deal aimed to curb Iran’s nuclear program in exchange for phased sanctions relief. Advocates presented it as a significant non‑proliferation success; critics warned about enforcement and regional implications. Meanwhile, diplomatic tensions persisted elsewhere: Russia’s role in the Syrian civil war intensified, foreshadowing its direct military intervention; relations between the West and Russia remained strained following events in Ukraine the previous year.

Politics and International Relations

Culturally, 2015 was the "Bass" to our modern "Treble." Marketers began shifting focus from flashy tech to the heartbeat of brands—the people . It was the year of "Deep Down Low," a track that changed the electronic music scene forever

The year was also defined by significant social progress and shifts in public consciousness.

Sports

• NFL: The New England Patriots won Super Bowl XLIX (49) in February 2015 by defeating the Seattle Seahawks.
• Cricket: The ICC Cricket World Cup was held in 2015 in Australia and New Zealand, with Australia emerging as the champion.