And, of course, technological developments have challenged governments, by both the opportunity to acquire information and the need to consider these new channels of communication as useful to criminals to undertake illegal activities.
Had this been a cooler, less humid day and had the course been flatter, Takahashi might have challenged the world record of 2 20 43, held by Tegla Loroupe of Kenya.
Strachey, of course, is best known for having challenged the staid, fact-gathering, and incorrigibly sentimental tradition of historical biography with his irreverent and psychologically informed approach to hallowed public figures.
In this context, the agreement seems to have challenged the course that Abadi has recently taken, which raises serious questions about the extent to which the prime minister controls major military decisions.
Noting that none of her slaves have challenged her, Ana reflects: "But of course, they could..
Adu-Bobie, who contracted septicaemia while she was working in New Zealand studying the disease, says the return to Imperial College – where she studied for her PhD – for the two year, part-time executive MBA course has been challenging, but she relished the chance to work alongside a wide range of talented people from many disciplines and careers.
"The course has been challenging, but I have enjoyed it immensely.
"The course has been challenging, but I have enjoyed it immensely," said the prince.
He was after real game, of course, having just challenged billionaire Republican Meg Whitman, who's blanketed California with ads for months, and her Republican rival, super-rich state Insurance Commissioner Steve Poizner, to debate right away.
SayNow, of course, has its challenges.
