Violence in Iraq has fallen since the height of sectarian fighting in 2006 and 2007, but deadly attacks still happen frequently.
Deadly attacks in such disparate places as Turkey, Morocco, Spain, Saudi Arabia and Indonesia have all been traced to local cells.
Nearly all of the deadly attacks reported by police officials were bombings.
In northern Iraq, insurgents are using Mafia-style rackets and extortion of legitimate businesses to fund deadly attacks on American and Iraqi forces.
Lahore, the centre of Pakistan's cultural life, was long spared the brunt of unrest, but has seen a string of deadly attacks throughout 2009.
Tehran has blamed Israel for deadly attacks on its nuclear scientists.
The concern remains that North Korea has staged deadly attacks before.
Although violence in Iraq has eased since a peak in 2006-2007 when tens of thousands were killed, insurgents still carry out deadly attacks, especially around the capital.
Last week, President Goodluck Jonathan declared a state of emergency in three north-eastern states - Borno, Adamawa, and Yobe - after a series of deadly attacks by militant groups.
He was referring to the breakaway Russian province, where Moscow says it is fighting the same international terrorism network that was behind the deadly attacks on the United States.
White House spokesman Jay Carney on Wednesday said Rehman was responsible for cross-border attacks in Afghanistan against NATO troops and as well as deadly attacks against Pakistani troops and civilians.
The adoption of slogans and symbols of Muslim-Christian unity is particularly important in a context where the Coptic community has been the target of a recent series of deadly attacks.
Al-Maliki, whose campaigning in the last elections trumpeted recent security gains and a drastic drop in violence, has been affected by a series of deadly attacks in Baghdad and in northern Iraq.
Pakistani has seen several such deadly attacks in recent years, including one last month that struck a crowded marketplace on the outskirts of Quetta that killed at least 89 people and wounded at least 180 others.
Accounts of the deadly attacks last fall in Mumbai, India, the May 2008 earthquake in China and last week's plane crash show what used to be just a virtual gathering place to communicate pet peeves or plans for the weekend has evolved into a go-to spot for eyewitness news -- sometimes even before mainstream media has had time to crack the story.
The bombing was the first major strike of its kind in India since the deadly Mumbai attacks of 2008.
The Bush administration has labeled bin Laden the "prime suspect" behind last week's deadly terrorist attacks in New York and Washington.
India wants Headley, a US man sentenced to 35 years in prison for his key role in plotting the deadly 2008 Mumbai attacks in which 175 people died.
It's responsible for the majority of the nation's lung cancer deaths and is a deadly factor in heart attacks and a variety of other illnesses.
More than 300 Iraqis have been killed in bombings and attacks, and in a deadly pipeline explosion.
Britain has been at the heart of several terror attacks or plots in recent years, the most deadly being the 2005 rush-hour suicide bombings when 52 commuters were killed.
Saturday's violence follows a spate of recent bias attacks on gay men in New York, but this was the first deadly one.
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