WASHINGTON (Reuters) - Government prosecutors on Monday will try to salvage the credibility of their key witness in the perjury trial of former Major League Baseball star Roger Clemens when his ex-trainer who said he supplied the pitching ace with drugs takes the stand. Brian McNamee, the most important witness for federal prosecutors who have charged Clemens with lying to the U.S. Congress about using the performance-enhancing drugs, will be wrapping up more than 20 hours of testimony in U.S. District Court. ...

Greece's newly installed caretaker prime minister began talks with party leaders Monday ahead of this week's European Union summit that's expected to focus on ways of kick starting economic growth across the continent.

Lowe's Cos.' first-quarter profit climbed 14 percent, as warmer weather helped boost sales. But the world's second-biggest home improvement company lowered its full-year earnings forecast on Monday, saying it is still cautious on the housing market and economic conditions.

GREENSBORO, North Carolina (Reuters) - Jurors were set to resume deliberations on Monday in the federal campaign finance case against former U.S. Senator John Edwards, who is accused of using campaign funds to hide his pregnant mistress as he sought the presidency. A jury of eight men and four women in Greensboro, North Carolina, considered the case for about 5 1/2 hours on Friday before breaking for the weekend. They must reach a unanimous verdict to convict Edwards, a two-time presidential candidate and the Democrats' 2004 vice presidential nominee, on any of the six felony counts he faces. ...

GREENSBORO, North Carolina (Reuters) - Jurors were set to resume deliberations on Monday in the federal campaign finance case against former U.S. Senator John Edwards, who is accused of using campaign funds to hide his pregnant mistress as he sought the presidency. A jury of eight men and four women in Greensboro, North Carolina, considered the case for about 5 1/2 hours on Friday before breaking for the weekend. They must reach a unanimous verdict to convict Edwards, a two-time presidential candidate and the Democrats' 2004 vice presidential nominee, on any of the six felony counts he faces. ...

MADRID (Reuters) - Spain said on Monday it would meet its deficit targets this year despite a new slippage in its regions' accounts and a further contraction of the economy in the second quarter. Economy Minister Luis de Guindos said economic activity would likely slump by another 0.3 percent between April and June, further fuelling doubts about the country's ability to get a grip on in its finances and nurse an ailing banking sector back to health. ...

CHICAGO (Reuters) - Four police officers were injured and 45 demonstrators arrested after baton-wielding police clashed with anti-war protesters marching on the NATO summit in Chicago on Sunday, police said. A lawyer's group assisting protesters challenged police figures, saying at least 12 protesters were hurt, some with head wounds from police batons, and more than 60 people detained. The confrontation began after a 2 1/2 mile march from a Chicago park to near the site of the summit, where leaders of the NATO alliance are discussing the war in Afghanistan. ...

CHICAGO (Reuters) - Four police officers were injured and 45 demonstrators arrested after baton-wielding police clashed with anti-war protesters marching on the NATO summit in Chicago on Sunday, police said. A lawyer's group assisting protesters challenged police figures, saying at least 12 protesters were hurt, some with head wounds from police batons, and more than 60 people detained. The confrontation began after a 2 1/2 mile march from a Chicago park to near the site of the summit, where leaders of the NATO alliance are discussing the war in Afghanistan. ...

JOHANNESBURG (Reuters) - South African industrial group Barloworld expects Chinese and Russian demand for resources to underpin growth for equipment such as forklifts and trucks, its chief executive told Reuters in an interview. Worries about slowing demand from the world's second-largest economy have hit commodities and led miners to defer spending plans. Yet Clive Thompson, head of the $2.3 billion equipment supply company, said such fears may be overblown. ...

NEW BRUNSWICK, New Jersey (Reuters) - A former Rutgers University student faces up to 10 years in prison at his sentencing on Monday for hate crimes after spying on his roommate's gay tryst, but many gay advocates are calling for no time behind bars. Tyler Clementi, 18, committed suicide in 2010 after learning that Dharun Ravi used a computer-mounted camera to see him kissing an older man in their dorm room and used social media to encourage others to watch. ...

NEW BRUNSWICK, New Jersey (Reuters) - A former Rutgers University student faces up to 10 years in prison at his sentencing on Monday for hate crimes after spying on his roommate's gay tryst, but many gay advocates are calling for no time behind bars. Tyler Clementi, 18, committed suicide in 2010 after learning that Dharun Ravi used a computer-mounted camera to see him kissing an older man in their dorm room and used social media to encourage others to watch. ...

MOSCOW (Reuters) - Russian President Vladimir Putin unveiled a government dominated by loyalists on Monday, tightening his grip on the economy and limiting Prime Minister Dmitry Medvedev's ability to pursue his reform agenda. Igor Shuvalov, a powerful Putin ally, kept his post as first deputy prime minister in overall charge of economic policy and Anton Siluanov, a career bureaucrat, remained finance minister. Putin also consolidated his power over the security structures, with Anatoly Serdyukov staying on as defense minister, and kept faith with long-serving Foreign Minister Sergei Lavrov. ...

A German official made clear on Monday that Berlin continues to oppose the idea of jointly-issued bonds for the 17-nation eurozone, which France's new president had suggested could be used to create much-needed economic growth and ease the region's financial crisis.

Assurances that world powers want debt-laden Greece to remain in the euro helped support world stock markets Monday after sharp losses over the past week.

Thailand's economy posted double-digit growth in the first quarter of 2012, rebounding sharply from the fallout of last year's devastating floods, official data showed Monday.

Bargain-hunting helped Asian stock markets edge upward Monday, but gains were limited as investors remained unconvinced that the world's major economies nailed a solution to the European debt crisis following a summit in Washington.

ABUJA (Reuters) - Nigeria's telecoms regulator fined the country's four main mobile operators, including MTN and Bharti Airtel, a total of 1.17 billion naira on Sunday for poor-quality service. The telecoms industry is hugely profitable in Nigeria, Africa's second-biggest economy and home to some 160 million people, but users complain that the service is poor, with frequent dropped calls and network interruptions. ...

Charleston, South Carolina (Reuters) - Tropical Storm Alberto churned off the coasts of Georgia and South Carolina on Sunday, and heavy rain and dangerous surf were expected even though forecasters said it had lost strength. Bringing an early start to the Atlantic hurricane season, Alberto reached tropical storm strength on Saturday. By Sunday evening it was about 85 miles south-east of St Augustine, Florida, according to the hurricane center in Miami. ...

Charleston, South Carolina (Reuters) - Tropical Storm Alberto churned off the coasts of Georgia and South Carolina on Sunday, and heavy rain and dangerous surf were expected even though forecasters said it had lost strength. Bringing an early start to the Atlantic hurricane season, Alberto reached tropical storm strength on Saturday. By Sunday evening it was about 85 miles south-east of St Augustine, Florida, according to the hurricane center in Miami. ...

SAN FRANCISCO (Reuters) - Getting married was a smart business move as well as a personal milestone for Facebook chief Mark Zuckerberg, with the timing of the wedding, the day after the company's initial public offering, potentially proving particularly advantageous, California divorce lawyers said on Sunday. Assuming the couple signed a prenuptial agreement, as most wealthy Californians do, Zuckerberg and Chan would have agreed exactly how to split assets, including his Facebook stock, if their marriage dissolved in future. ...

SAN FRANCISCO (Reuters) - Getting married was a smart business move as well as a personal milestone for Facebook chief Mark Zuckerberg, with the timing of the wedding, the day after the company's initial public offering, potentially proving particularly advantageous, California divorce lawyers said on Sunday. Assuming the couple signed a prenuptial agreement, as most wealthy Californians do, Zuckerberg and Chan would have agreed exactly how to split assets, including his Facebook stock, if their marriage dissolved in future. ...

CHICAGO (Reuters) - Michelle Obama showed off her neighborhood on the South Side of Chicago to some NATO visitors on Sunday, taking five other first ladies to a youth center for lunch and for a musical performance by the children. The women toured the Gary Komer Youth Center, which features a gymnasium, dance studio and a theater. The center provides tutoring, college preparation, training in culinary arts and horticulture for young people in the community, 90 percent of whom come from low-income households. ...

CHICAGO (Reuters) - Michelle Obama showed off her neighborhood on the South Side of Chicago to some NATO visitors on Sunday, taking five other first ladies to a youth center for lunch and for a musical performance by the children. The women toured the Gary Komer Youth Center, which features a gymnasium, dance studio and a theater. The center provides tutoring, college preparation, training in culinary arts and horticulture for young people in the community, 90 percent of whom come from low-income households. ...

(Reuters) - A pledge by leaders of industrialized nations to help the troubled world economy is unlikely to herald quick new action by Europe on its debt crisis, meaning more uncertainty for nervous financial markets. The Group of Eight economies stressed on Saturday that their "imperative is to promote growth and jobs", as they also recognized problems among European banks and gave verbal backing for Greece to stay in the euro. Still, despite U.S. calls for immediate moves to boost growth, no sign emerged that Germany would soften its stance on austerity as the cure for Europe's debt ...

CHICAGO (Reuters) - NATO leaders charting a path out of Afghanistan sought on Sunday to dispel fears of a rush for the exits in the unpopular war even as France's new president vowed to stick by his pledge to withdraw French troops by year's end. President Barack Obama, who once called the Afghan conflict a "war of necessity" but is now looking for an orderly way out, hosted the NATO summit in his home town, Chicago, a day after major industrialized nations tackled a European debt crisis that threatens the global economy. ...

CHICAGO (Reuters) - Thousands of protesters carried their anti-war message to world leaders at a NATO summit on a steamy Sunday, in a mostly peaceful march led by a group of Iraq War veterans who symbolically gave back their military medals. During the march, a group of black-clad demonstrators darted toward police lines along the route, and some threw water bottles at officers who pushed back and yelled at them to move along, but there were no major incidents. ...

WASHINGTON/MOSCOW (Reuters) - Russian President Vladimir Putin will unveil a government dominated by loyalists on Monday, leaving Prime Minister Dmitry Medvedev limited scope to pursue his reform agenda and entrenching the Kremlin's grip over the economy's commanding heights. Medvedev, 46, named premier after Putin returned to the Kremlin on May 7, has pledged to launch pro-growth policies and a privatization drive to wean Russia's $1.7 billion economy off its dependence on oil. ...

JOPLIN, Mo (Reuters) - Having the president of the United States speak at commencement would normally be the most memorable day in the life of a high school senior. But not in Joplin, Missouri, where President Barack Obama's commencement address on Monday will come one year after the deadliest tornado in the United States in six decades killed 161 people. "I'm pretty sure we will remember the tornado more than Obama's speech," said graduating senior Ethan Ritschel. ...

PHOENIX (Reuters) - An Arizona wildfire whipped up by winds and dry conditions threatened to trigger more evacuations on Sunday, just as firefighters were nearly done battling the biggest of four blazes in the state. Fires in Arizona, New Mexico and Colorado have forced the evacuation of several small towns and torched more than 65 square miles (168 square km) of forest, brush and grass in the U.S. Southwest. ...