(Business Insider) Major US indexes fell on Friday amid rising tensions in the Middle East. The major headline was Iran reportedly seizing two British tankers a development seen as a major escalation against the US and UK. Meanwhile Microsoft maintained its spot as the worlds most valuable company after reporting better than expected revenue and earnings per share in the second quarter. The American technology company posted a 19 increase in cloud revenue with Microsoft Azure by 64 since last year. Shares of Microsoft rose as much as 3 and pushed its market value to $1.05 trillion.