Mixed Signals on Iran Nuclear Deal Keep Energy Markets on Edge Kevin Warsh Sworn In as Fed Chair Promises ReformOriented Approach in White House Ceremony Airbus Explores Potential Acquisition of Canadian Helicopter Plant Tied to Defense Contracts Nvidia Assures Skeptical Investors on AI Mainstream Adoption Boosts Dividend and Announces 80 Billion Buyback Chinas Seven Titans Stocks Slide as Deflationary Pressures Overshadow AI Optimism CBS Paramount Withdraw Copyright Claims Over Stephen Colberts Viral Parody Berkshire Buys Delta Billionaire Sells AAL and UAL A Tale of Two Trades