Mr Obama has dubbed the Afghanistan-Pakistan frontier the world's most dangerous place.
The British-drawn boundary between the two countries is disputed by Afghanistan, which doesn't recognize as an international frontier the so-called Durand Line that cuts through the ethnic Pashtun heartland.
The proposals were never shown to the Poles, nor to us, and though they were announced in a German broadcast on Thursday night, Hitler did not wait to hear comments on them but ordered his troops to cross the Polish frontier the next morning.
"The Last Frontier" has been reunited with the "final frontier" after the return of moon rocks that went missing in Alaska nearly 40 years ago.
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On Tuesday, the Israeli military said a mortar shell exploded on its side of the frontier in the Golan Heights.
Find out more about VS Ramachandran's work on Exchanges at the Frontier from the BBC World Service in association with the Wellcome Collection.
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To roll back the frontier of the state, Margaret Thatcher had to take more POWER and in doing so she sort of accidentally rolled it forward.
Big news on the Frontier Investing front: The biggest retailer in the world is making a bold new push into what most regard as the final frontier market.
The efficient frontier is the blending of all possible components into portfolios with the highest possible return and the lowest possible volatility.
The next frontier in the evolving One Web approach is building on responsive design techniques to develop websites that are truly adaptive.
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And at the efficient frontier, the math produces nothing but curves.
And modern communications instantly span every continent The new frontier is that there is no frontier, the new shared truth is that global problems need global solutions.
The "People of the Springs" exhibit traces the city's obscure history, from Native American dwellings to the arrival of the railroad on the Western frontier and the construction of Hoover Dam.
Facebook COO, Sheryl Sandberg, recently told Charlie Rose that Mobile is the next frontier for the company and the move to mobile marketing has got the company thinking about its strategy in that arena.
Weaving its way through a maze of broccoli-coloured islands in waters where Orca whales can be spotted during the summer months, the journey crosses the invisible frontier between the urban frenzy of Seattle and the soporific rhythms of the Puget Sound, the inland sea in which the San Juan Islands are located .
India was regarded as the final frontier by the Australians even when they were pulverizing everyone else to a pulp, and encounters between the two sides have had added piquancy ever since, intensified by some very intense on-field disagreements between players, most notably between Harbhajan and Australia's Andrew Symonds at Sydney in 2008.
The reality is that amid the new media frontier, the search for big brand ideas endures, but advertising is no longer the dominant driver to create and tell brand stories.
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"The Latinos are a little bit more open to sharing their thoughts with the world, and basically weblogs are the next evolution frontier on the internet, " said Mariano Amartino of the blog community site, Weblogs.com.ar.
Call it the mild, mild West: the romance of the frontier intertwined with the comforts of wealth.
Before that, he was commander of the Frontier Corps - the paramilitary force that guards Pakistan's tribal belt.
According to a White House press release dated Sept. 29th, the U.S. is providing high-tech equipment to help the Frontier Corps patrol the border with Afghanistan.
Many of the companies represented in her delegation have plants and factories in the frontier provinces on the Afghan border, a part of the country that might spook American investors.
The guarantors' package unwrapped last week in essence leaves Peru with what it has long claimed and held, confirming that the frontier lies along the high peaks of the Condor range.
That efficiency will be crucial if the US is to stay on the boundary of its production possibility frontier in the face of automatic cuts in federal spending that began last month.
While Wal-Mart's core rural customers continue to show up in droves, the company's next growth frontier, the heavily unionized big cities, has been held up by local politicians looking to score points by publicly supporting worker interests.
While other top NFL executives have spent the off-season tied up in the tedium of the labor lockout, Rolapp--a cherub-faced 38-year-old--spent it looking ahead to the NFL's next great frontier: the convergence of videogaming, mobile computing and social media.
The ridge of the South Downs I was walking had become a frontier in the landscape, dividing the world into realms of weather, light and colour.
Mr Saakashvili had to tread carefully in Ajaria because of a sprawling ex-Soviet base near Batumi, a legacy of the days when this was a cold-war frontier between the Red Army and Turkey, a NATO member.
In addition, he has sent soldiers across the frontier in pursuit of the murderers.
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