Donna A Sandlin

President Obama revealed new sanctions against Iran's energy, petrochemical and financial sectors, ratcheting up pressure on the country to meet its nuclear obligations.

Google Inc said on Tuesday it acquired marketing start-up Wildfire to help the world's largest Internet search company expand further into social media.

The Federal Trade Commission on Tuesday said it will be more willing to seek monetary penalties against companies that violate antitrust laws, a change of the agency's policies.

Brazilian steelmaker Usinas Siderurgicas de Minas Gerais SA (USIM5.BR), or Usiminas, will achieve annual costs savings of 50 million Brazilian reais ($24.51 million) with the current modernization of its steel mills, Chief Executive Julian Eguren said Tuesday.

"Marathon Petroleum 2nd-Quarter Net Up 1.5% On Speedway, Refining Growth," at 7:50 a.m. EDT, misstated the revenue expected by analysts surveyed by Thomson Reuters.

Anglo-Swiss miner Xstrata PLC (XTA.LN) Tuesday reported lower mined copper output but higher coal output in the first half of the year compared with a year earlier as it continues to make progress on completing 10 major growth projects in 2012.

Chinese search engine company Baidu Inc. (BIDU) and Sina Corp. (SINA), the Chinese owner of the Weibo microblogging service, have announced a mobile-focused partnership, the BBC reported.

Archer Daniels Midland Co.'s (ADM) fiscal fourth-quarter earnings fell 25% as dwindling U.S. corn supplies hurt its grain-handling and ethanol businesses.

No. 2 U.S. home-improvement retailer Lowe's Cos. shares fell 5% on Tuesday after the company confirmed it made an unsolicited bid July 8 to acquire Canadian home-improvement and hardware retailer Rona Inc. Rona said in a separate statement that it's rejected the bid. Lowe's said its C$14.50

Peregrine Financial Group President Russell Wasendorf Jr. has been subpoenaed to testify before a federal grand jury in connection to an investigation into the failed brokerage.