BOGOTA, Aug. 1 (Xinhua) -- Former Colombian President Alvaro Uribe was sentenced to 12 years of house arrest in the first instance after being found guilty of witness tampering and procedural fraud, ...

The Dow Jones Industrial Average dropped 542.4 points, or 1.23 percent, to 43,588.58. The S&P 500 declined 1.6 percent to 6,238.01, and the Nasdaq Composite slid 2.24 percent to 20,650.13.