U.S. stocks are falling as Wall Street inches towards a fifth consecutive losing week, which would be its longest in nearly four years. The S&P 500 fell 0.4% in early trading, following its worst drop since the Iran war began. Meanwhile, oil prices rose as Israel launched a new wave of attacks on Iran and President Donald Trump extended his deadline for Tehran to open the Strait of Hormuz. Despite this, investors remain skeptical about the possibility of an end to the conflict. The war, now in its fourth week, is expected to fuel global inflation and impact economic growth of many countries due to rising energy costs and trade disruptions.