By Ian Chua SYDNEY (Reuters) - Asian stocks fell to one-month lows on Friday and the yen rebounded broadly as extreme volatility in the Nikkei kept investors on edge. The Nikkei has soared nearly 70 percent since November, off the back of aggressive fiscal and monetary policies to revive the economy, leaving the market susceptible to profit taking. It fell more than 7 percent on Thursday after Chinese data raised doubts about the health of the global economy, but it found support on Friday from investors looking for bargains. ...

By Jessica Wohl (Reuters) - Procter & Gamble Co on Thursday brought back A.G. Lafley to run the world's largest household products maker, replacing Bob McDonald immediately in the midst of a major restructuring. Lafley is taking on the roles of chairman, president and chief executive officer, effective immediately, while McDonald is set to retire on June 30 after 33 years at P&G. The move comes as some investors have pushed for faster improvements from the maker of Tide detergent and Gillette razors. P&G unveiled a $10 billion restructuring program in February 2012. ...

WASHINGTON (Reuters) - U.S. regulators are in the early stages of an antitrust probe into whether Google Inc, the top player in Web display advertising, breaks antitrust law in how it handles some advertising sales, a source told Reuters on Thursday. The source said that it was unlikely that the Federal Trade Commission had sent out civil investigative demands in relation to the probe, which would be the sign of a formal and more serious investigation. ...

By William Mallard TOKYO (Reuters) - This week's turbulence in Tokyo markets exposes a key risk of Prime Minister Shinzo Abe's all-in strategy to revive Japan's economy - if investor confidence falters, the government and the Bank of Japan may be left with few options to turn the tide. On Friday, the Nikkei share average had another tumultuous session, traversing a 7.1 percent range between positive and negative territory before ending up 0.9 percent. The violent moves kept investors on edge after a 7. ...

By Michelle Sierra NEW YORK (Reuters) - Activist investor Carl Icahn and Southeastern Asset Management Inc have initiated talks with banks and asset managers to line up commitments for as much as $7 billion in bridge loans to back their leveraged recapitalization proposal for Dell Inc, banking sources told Thomson Reuters LPC on Thursday. Jefferies & Co is leading the deal. Icahn and Southeastern are looking to lock in the financing before Dell shareholders meet in July to vote on a rival take-private offer from CEO Michael Dell and Silver Lake Partners. ...