Wall St closed slightly higher overnight as the escalating tensions in the Middle East impacted markets. The Dow Jones added 0.09%, the S&P 500 rose just 0.01% and the tech-heavy Nasdaq gained 0.08%.Iran’s attack on Israel has impacted investor enthusiasm on Wall St for the new trading month and quarter, with trader uncertainty set to continue following Israel starting ground operations in Lebanon.Over in Europe, markets closed mixed, following in a similar trend to the US. The STOXX600 r...