A roadside bomb exploded in a restive suburb of the Syrian capital as senior U.N. officials toured the area on Sunday, the latest incident in which the unarmed observer mission has nearly been caught up in the country's bloodshed.

The NATO alliance that has fought for a decade in Afghanistan is helping that nation shift toward stability and peace, but there will be "hard days ahead," President Barack Obama said Sunday as alliance leaders insisted the fighting coalition will remain effective despite France's plans to yank combat troops out early.

Profiles of Egypt's main presidential candidates:

MOSCOW (Reuters) - Russia's deputy foreign minister said on Sunday that military action against Iran over its nuclear program was being considered in some Western countries. Deputy Foreign Minister Sergei Ryabkov was speaking to reporters on a plane on his way back from the G8 summit in Camp David, where the G8 leaders signaled their readiness to tap into emergency oil stockpiles quickly this summer if tougher new sanctions on Iran threatened to strain supplies. ...

TRIPOLI (Reuters) - Abdel Basset al-Megrahi, the Libyan convicted of the 1988 bombing of a PanAm flight over Lockerbie, died of cancer on Sunday aged 60, leaving many questions on the attack and its aftermath unanswered. Megrahi, who said he was not responsible for bringing the jumbo jet down on the Scottish town and killing 270 people, was found guilty in 2001 but was freed in 2009 and returned to Libya because he had terminal cancer and was not expected to live long. ...

TRIPOLI (Reuters) - Abdel Basset al-Megrahi, the Libyan convicted of the 1988 bombing of a PanAm flight over Lockerbie, died of cancer on Sunday aged 60, leaving many questions on the attack and its aftermath unanswered. Megrahi, who said he was not responsible for bringing the jumbo jet down on the Scottish town and killing 270 people, was found guilty in 2001 but was freed in 2009 and returned to Libya because he had terminal cancer and was not expected to live long. ...

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. ...

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. ...

CHICAGO (Reuters) - Thousands of protesters, some dressed as clowns and others bearing anti-war signs, gathered on Sunday in a lakefront park in the biggest test yet for Chicago police trying to keep the peace as world leaders began meeting for a two-day NATO summit. Previous protests in the run-up to the summit Sunday and Monday have been lively but peaceful, resulting in fewer than two dozen arrests over the past six days, according to the Chicago Police Department. ...

CHICAGO (Reuters) - Thousands of protesters, some dressed as clowns and others bearing anti-war signs, gathered on Sunday in a lakefront park in the biggest test yet for Chicago police trying to keep the peace as world leaders began meeting for a two-day NATO summit. Previous protests in the run-up to the summit Sunday and Monday have been lively but peaceful, resulting in fewer than two dozen arrests over the past six days, according to the Chicago Police Department. ...

CHICAGO (Reuters) - Thousands of protesters, some dressed as clowns and others bearing anti-war signs, gathered on Sunday in a lakefront park in the biggest test yet for Chicago police trying to keep the peace as world leaders began meeting for a two-day NATO summit. Previous protests in the run-up to the summit Sunday and Monday have been lively but peaceful, resulting in fewer than two dozen arrests over the past six days, according to the Chicago Police Department. ...

SANT' AGOSTINO, Italy (Reuters) - A strong earthquake in northern Italy killed at least six people, injured dozens and damaged historic buildings including a famed mediaeval castle early on Sunday, waking terrified citizens and sending thousands running into the streets. The quake, which the U.S. Geological Survey recorded at magnitude 6.0, struck at 4:04 a.m. (0204 GMT) and was followed by a series of jolting aftershocks. At least two of them reached magnitude 5.1, sowing fresh panic, further damaging already weakened buildings and causing more structures to collapse. ...

Facebook begins selling stock to the public Friday in the most talked-about market debut in years. Two Associated Press business writers are debating whether the stock is a smart buy.

(Reuters) - Pioneering glass artist Dale Chihuly, whose work has been shown in over 200 museums worldwide, will be honored in his home city Seattle when "Chihuly Garden and Glass" opens on Monday, offering the most comprehensive collection of his work ever. Spanning one and a half acres in the shadow of the Space Needle, the show includes an exhibition hall, a garden and a "Glass House" structure by Chihuly, inspired by his two favorite buildings, Paris' Sainte-Chapelle and London's Crystal Palace. ...

(Reuters) - Pioneering glass artist Dale Chihuly, whose work has been shown in over 200 museums worldwide, will be honored in his home city Seattle when "Chihuly Garden and Glass" opens on Monday, offering the most comprehensive collection of his work ever. Spanning one and a half acres in the shadow of the Space Needle, the show includes an exhibition hall, a garden and a "Glass House" structure by Chihuly, inspired by his two favorite buildings, Paris' Sainte-Chapelle and London's Crystal Palace. ...

"The Avengers" continues to muscle out everything else Hollywood throws at it, easily sinking naval rival "Battleship" and other new releases.

Former Prime Minister Ehud Olmert on Sunday urged Israeli leaders to relinquish the idea of a unified Jerusalem if they truly want peace, contending in a pair of interviews that years of government neglect have kept the Jewish and Arab sectors irreparably divided.

DOUMA, Syria (Reuters) - A roadside bomb exploded on Sunday about 150 meters (yards) from a United Nations convoy carrying the head of a Syria ceasefire monitoring mission and a senior U.N. official in the town of Douma, a Reuters witness said. Major General Robert Mood's car was stopped at an army checkpoint when the bomb detonated in an nearby alleyway and the convoy left, the Reuters journalist said, adding that there were no reports of casualties. United Nations Under-Secretary-General for Peacekeeping Operations Hervé Ladsous, who is visiting Syria, was also part of the convoy. ...

When Dan Fitzsimmons looks across the Susquehanna River and sees the flares of Pennsylvania gas wells, he thinks bitterly of the riches beneath his own land locked up by the heated debate that has kept hydraulic fracturing, or fracking, out of New York.

VIENNA (Reuters) - The U.N. nuclear supervisor flies to Tehran on Sunday looking for a deal to inspect suspected weapons sites - a potential breakthrough that Iran may hope could persuade the West to start lifting sanctions and deflect threats of war. But though IAEA chief Yukiya Amano scheduled Monday's talks with Iran at such short notice that diplomats said agreement on new inspections may be near, few see Tehran convincing Western governments to ease back swiftly on punitive measures when its negotiators meet big power officials in Baghdad on Wednesday. Amano, director general of the U.N. ...

VIENNA (Reuters) - The U.N. nuclear supervisor flies to Tehran on Sunday looking for a deal to inspect suspected weapons sites - a potential breakthrough that Iran may hope could persuade the West to start lifting sanctions and deflect threats of war. But though IAEA chief Yukiya Amano scheduled Monday's talks with Iran at such short notice that diplomats said agreement on new inspections may be near, few see Tehran convincing Western governments to ease back swiftly on punitive measures when its negotiators meet big power officials in Baghdad on Wednesday. Amano, director general of the U.N. ...

President Barack Obama says the NATO alliance agrees on a vision for post-2014 Afghanistan and is pressing world leaders to implement that strategy following a decade of war.

WASHINGTON (Reuters) - Iran's economy minister said oil prices will "certainly" rise if the European Union moves ahead with an embargo in July and that sanctions will backfire on those who impose them. The European Union is preparing for a total embargo on the purchase of Iranian crude oil in July. The United States has also imposed sanctions targeting Iran's energy and banking sectors. ...

A magnitude-6.0 earthquake shook several small towns in northeast Italy Sunday, killing four people, knocking down a clock tower and other centuries-old buildings and causing millions in losses to the region known for making Parmesan cheese.

CHICAGO (Reuters) - There are weeks in the political life of Angela Merkel that were surely more pleasant than the last one. Last Sunday, the German chancellor's party suffered a big loss in the regional election of North Rhine-Westphalia. On Wednesday, she sacked one of her cabinet ministers, a rare move for her, after he led the party to the election defeat. On Saturday, she looked isolated with her insistence on fiscal austerity - also known as "consolidation" -for the ailing euro zone at the G8 summit hosted by President Barack Obama at Camp David in Maryland. ...

  ABC News’ George Will this morning slammed The New York Times for its story this week outlining a proposed advertising campaign to link Rev. Jeremiah Wright and President Obama. Will argued on the “This Week” roundtable that the story did not accurately reflect the actions of  Joe Ricketts –...

The United States and NATO leaders insist the Afghanistan fighting coalition will remain whole despite France's plans to yank combat troops out early, but leaders wary of plummeting public support for the war are using an alliance summit Sunday to show they want to move quickly away from the front lines.

DUBAI (Reuters) - A leading Bahraini opposition activist accused of insulting authorities remained in jail on Sunday, despite being granted bail, because he faces a second charge of organizing illegal protests, his lawyer said. Nabeel Rajab is the founder of the Bahrain Centre for Human Rights who led many protests that were part of an on-going uprising led by the Shi'ite Muslim majority against the Sunni ruling Al Khalifa dynasty that rules the Gulf Arab island. ...