Three climbers died and two others were missing while descending from the summit of Mount Everest — a toll that raised concerns about overcrowding in the "death zone" at the top of the world's tallest peak.

WASHINGTON (Reuters) - Gregory Jaczko, the chairman of the U.S. Nuclear Regulatory Commission, announced on Monday he would resign from the post after a year of intense criticism of his management tactics. "After an incredibly productive three years as Chairman, I have decided this is the appropriate time to continue my efforts to ensure public safety in a different forum," Jaczko said in a statement. (Reporting by Roberta Rampton)

WASHINGTON (Reuters) - Gregory Jaczko, the chairman of the U.S. Nuclear Regulatory Commission, announced on Monday he would resign from the post after a year of intense criticism of his management tactics. "After an incredibly productive three years as Chairman, I have decided this is the appropriate time to continue my efforts to ensure public safety in a different forum," Jaczko said in a statement. (Reporting by Roberta Rampton)

Jury selection has begun at the insider trading trial of a former board member for Goldman Sachs and Procter & Gamble.

Campbell Soup Co. is still struggling to heat up its lukewarm soup sales, with net income slipping by 5 percent in its fiscal third quarter even as the company spent more on marketing.

President Barack Obama expressed confidence in Afghanistan's ability to take the lead for its own security next year, as NATO leaders huddled Monday for talks aimed at paving the way for the deeply unpopular war's end.

TRIPOLI (Reuters) - - The Libyan convicted of the 1988 bombing of a PanAm flight over Lockerbie was buried on Monday in a quiet family ceremony, ignored by most Libyans keen to forget the international controversy that surrounded Abdel Basset al-Megrahi in life. Megrahi, who always said he was not responsible for bringing down the jumbo jet on the Scottish town and killing 270 people, died in his bed in Tripoli on Sunday surrounded by family. His release from jail in 2009 caused controversy in Britain and the United States, where most victims were from. ...

CAIRO (Reuters) - The Arab League called on Tehran on Monday to halt what it described as a media campaign against Bahrain over a proposal for political and military union between Gulf Arab states. Saudi Arabia has been pushing the idea of closer Gulf integration to contain Shi'ite Muslim unrest in Bahrain and counter the influence of regional Shi'ite power Iran. Riyadh's initial goal appears to be a merger with Bahrain, where majority Shi'ites have been staging pro-democracy demonstrations targeting the Sunni Muslim ruling family for over a year. ...

CAIRO (Reuters) - The Arab League called on Tehran on Monday to halt what it described as a media campaign against Bahrain over a proposal for political and military union between Gulf Arab states. Saudi Arabia has been pushing the idea of closer Gulf integration to contain Shi'ite Muslim unrest in Bahrain and counter the influence of regional Shi'ite power Iran. Riyadh's initial goal appears to be a merger with Bahrain, where majority Shi'ites have been staging pro-democracy demonstrations targeting the Sunni Muslim ruling family for over a year. ...

SHANGHAI/NEW YORK (Reuters) - Chinese Internet entrepreneur Jack Ma's Alibaba Group is buying back up to half of Yahoo Inc's 40 percent stake for $7.1 billion in a deal that moves the Chinese e-commerce leader closer to a public listing. Under the agreement, Yahoo will sell one-half its stake in Alibaba for at least $6.3 billion in cash and up to $800 million in new Alibaba preferred stock. ...

SHANGHAI/NEW YORK (Reuters) - Chinese Internet entrepreneur Jack Ma's Alibaba Group is buying back up to half of Yahoo Inc's 40 percent stake for $7.1 billion in a deal that moves the Chinese e-commerce leader closer to a public listing. Under the agreement, Yahoo will sell one-half its stake in Alibaba for at least $6.3 billion in cash and up to $800 million in new Alibaba preferred stock. ...

NEW YORK (Reuters) - Stocks rose on Monday, with the Nasdaq and the S&P 500 up 1 percent as markets recovered from their worst weekly decline for the year after world leaders expressed support for Greece to stay in the euro zone. The Dow Jones industrial average gained 80.15 points, or 0.65 percent, to 12,449.53. The Standard & Poor's 500 Index gained 12.03 points, or 0.93 percent, to 1,307.25. The Nasdaq Composite gained 34.44 points, or 1.24 percent, to 2,813.23. (Reporting By Edward Krudy, editing by Dave Zimmerman)

SANAA (Reuters) - A suicide bomber with explosives strapped under his uniform killed more than 90 people at a military parade rehearsal in the Yemeni capital Sanaa on Monday, an attack which will alarm Washington as its involvement in the front-line state deepens. The bombing also wounded about 200 people, officials said, making it the bloodiest single incident in the city in recent years. Yemen's defense minister and chief of staff were both present at the rehearsal for Tuesday's National Day parade but neither was hurt. ...

SANAA (Reuters) - A suicide bomber with explosives strapped under his uniform killed more than 90 people at a military parade rehearsal in the Yemeni capital Sanaa on Monday, an attack which will alarm Washington as its involvement in the front-line state deepens. The bombing also wounded about 200 people, officials said, making it the bloodiest single incident in the city in recent years. Yemen's defense minister and chief of staff were both present at the rehearsal for Tuesday's National Day parade but neither was hurt. ...

A suicide bomber blew himself up at a military parade rehearsal Monday in Yemen's capital, killing 96 soldiers in one of the deadliest attacks in the city in years, officials said.

MOSCOW (Reuters) - Russian President Vladimir Putin unveiled a government dominated by loyalists on Monday, tightening his grip on the economy and national security after protests, and limiting Prime Minister Dmitry Medvedev's ability to pursue market reforms. Putin, 59, opted for continuity by retaining his ally Igor Shuvalov as first deputy prime minister in charge of economic policy, while Igor Sechin will remain his energy chief in a role outside the government. ...

(Reuters) - Facebook stock sank on Monday in the first day of trading without the full support of the company's underwriters, leaving some investors down nearly 25 percent from where they were Friday afternoon. Facebook's debut was beset by problems, so much so that Nasdaq said on Monday it was changing its IPO procedures. That may comfort companies considering a listing but does little for Facebook, whose lead underwriter Morgan Stanley had to step in and defend the $38 offering price on the open market. Without that same level of defense, its shares fell $4.64 to $33. ...

NEW YORK (Reuters) - Best Buy Co Inc , the world's largest consumer electronics chain, said it has selected headhunter Spencer Stuart Inc to conduct the search for a new chief executive. Brian Dunn resigned as CEO last month. Following his departure, the company said an internal probe found that Dunn had an improper relationship with a female employee. Best Buy is in the midst of what it expects to be a six- to nine-month search for a successor to Dunn. Board member G. Mike Mikan is acting as interim CEO. The company said it will consider internal and external candidates for the job. ...

VIENNA/DUBAI (Reuters) - The U.N. nuclear watchdog chief held rare talks in Tehran on Monday after voicing hope for a deal to investigate suspected atomic bomb research - a gesture Iran might make to try to get international sanctions relaxed and deflect threats of war. International Atomic Energy Agency Director-General Yukiya Amano began discussions with the head of Iran's nuclear energy organization, Fereydoun Abbasi-Davani, a few hours after his pre-dawn arrival, according to ISNA news agency. ...

VIENNA/DUBAI (Reuters) - The U.N. nuclear watchdog chief held rare talks in Tehran on Monday after voicing hope for a deal to investigate suspected atomic bomb research - a gesture Iran might make to try to get international sanctions relaxed and deflect threats of war. International Atomic Energy Agency Director-General Yukiya Amano began discussions with the head of Iran's nuclear energy organization, Fereydoun Abbasi-Davani, a few hours after his pre-dawn arrival, according to ISNA news agency. ...

Emergency crews inspected schools, churches and other buildings Monday for damage as aftershocks rattled northern Italy a day after a magnitude-6.0 earthquake killed seven people and toppled centuries-old buildings.

Stocks rose Monday morning as investors latched onto a survey suggesting that economists are more optimistic about housing and unemployment.

WASHINGTON (Reuters) - Gregory Jaczko, the chairman of the U.S. Nuclear Regulatory Commission, announced on Monday he would resign from the post after a year of intense criticism of his management tactics. "After an incredibly productive three years as Chairman, I have decided this is the appropriate time to continue my efforts to ensure public safety in a different forum," Jaczko said in a statement. (Reporting by Roberta Rampton)

NEW YORK (Reuters) - JPMorgan Chase & Co Chief Executive Officer Jamie Dimon said on Monday that the bank had suspended repurchases of its stock, but is maintaining its dividend, while working down losing trades in credit derivatives. Shares of JPMorgan were down 1 percent at $33.13 in morning trading after Dimon started speaking at the Deutsche Bank Securities Global Financial Services Investor Conference in New York. The bank announced on May 10 that it had lost at least $2 billion mishandling a portfolio of credit derivatives. JPMorgan won permission from the U.S. ...