Stocks move lower as investors balance optimism tied to a potential Iran nuclear agreement against concerns about the Federal Reserve’s interest-rate outlook. Multiple reports attribute the market weakness to expectations that the Fed may keep policy restrictive for longer, which can reduce the appeal of risk assets such as equities. While sentiment improves on the prospect of progress in the Iran deal—seen as potentially easing geopolitical risk and improving expectations for energy and trade—this positive impulse is outweighed by macroeconomic factors related to rates. As a result, investors focus more on whether higher-for-longer borrowing costs could affect corporate earnings and economic activity. Overall trading sentiment remains cautious: the Iran-related headlines support risk appetite, but changes in Treasury yields and expectations for future Fed decisions drive the day’s downside pressure. The combined takeaway is that near-term market direction is determined more by interest-rate expectations than by geopolitical optimism, with investors closely monitoring both central-bank signals and developments around the Iran agreement.