New Delhi, Feb. 17 -- US stock indices declined on Tuesday due to persistent anxieties regarding the future of artificial intelligence (AI) and as market participants redirected their attention toward the US-Iran nuclear negotiations.

The volatility triggered by AI underscores concerns that are becoming notably contradictory. One perspective suggests that the technology is set to overhaul entire economic sectors so radically that shareholders are offloading stocks in any firm perceived to be even slightly vulnerable to displacement. Conversely, there is profound doubt regarding whether the massive capital investments, totaling hundreds of billions of dollars, will yield significant financial returns in the near future.

As of 10 a.m. Eas...