Supremacy can be fleeting in the highly competitive AI race. But two months into 2026, Anthropic's Claude is upending U.S. national security, roiling financial markets and redefining how startups are built.Why it matters: The company is in the middle of the most important fight of the era — how much power to give AI in the face of threats, real and virtual.Anthropic said this week it would soften the central commitment of its flagship safety framework, acknowledging that unilateral safety pledge...