Underscoring the difficulty of ensuring security for Nigerian national elections due to take place within weeks, suicide bombers attacked markets and a bus station in the city, killing more than 50 people, many of them women and children.
Driving back late from the border (marked by a waist-high scrappy barbed-wire fence) through Mr Chilton's ranch, the difficulties of measuring security become clear.
Ironically, the difficulties of the security situation make technology potentially the ideal industry for Palestinians.
Her inability to deal with a complex cyber landscape is mirrored elsewhere in the government, which is stricken with the "double whammy" of low budgets and the difficulty of retaining highly skilled security professionals.
'You didn't tell us you were doing this.'" Since Snowden's leaks put the NSA under scrutiny from June 2013 the former first lady has steered a cautious course, making occasional swipes at Snowden and vague reprimands of the NSA while stressing the difficulty of balancing privacy and national security concerns.
The difficulty of making accurate long-term security predictions in many transition settings requires innovative strategies, such as the adaptation of voucher, cash transfer, and insurance schemes increasingly used in emergency settings - and greater donor flexibility for advance financing or use of prepositioned commodities.
"What this plan illustrates is the difficulty of fashioning a politically viable Social Security reform proposal without using any non-Social Security revenue".
The Taliban's attacks have forced the authorities to tighten security, and the difficulty of reaching all the voters has seen planes, bicycles and even donkeys used to deliver ballot papers.
In "BB? AAA? Disclosure Tells Us More" (Fair Game, Sept. 5), Gretchen Morgenson pointed out the difficulty of evaluating risks in asset-backed securities.
The spreading fallout and the difficulty of evaluating the value of mortgage securities has made banks and brokerage firms much more wary of lending to clients like hedge funds — and yesterday even to each other.
