Amid persistent frictions between the US and German governments because of the Edward Snowden revelations two years ago of US and British surveillance activities in Europe, the fresh disclosures are embarrassing for Berlin which stands accused of hypocrisy in its protests about America spying on its allies.
The mistaken killing of civilians by NATO troops is one of the most persistent sources of friction between Karzai and his Western backers, and was back in the spotlight this month after Washington offered a rare apology for the death of nine Afghan boys gunned down by helicopters while collecting firewood.
Friction persisted anyway.
While relatively inexperienced and a leader of organizations with less than half the Philharmonic's $69 million budget, Mr. VanBesien faces enormous challenges: persistent and large deficits, labor friction, hefty pension liabilities, the lack of an established summer home like the Boston Symphony's at Tanglewood, and competition from orchestras visiting Carnegie Hall.
We could show (survey in Ref. [1]) that persistent air layers reduce the friction.
But persistent political problems and the frictions created by the military's ascendant power continue to gnaw at the country's stability.
Moll (2014) shows that, when firms' productivity shocks are persistent, TFP steady state losses due to financial frictions are small, since entrepreneurs can overcome financial constraints by self-financing using their own wealth.
In the design of the estimator, the nonlinear downhole friction torque is approximated by a linear persistent disturbance model.
The reason for persistent unemployment in this model is that costly search frictions make it difficult for jobless workers to match with firms with vacancies.
Informants described different symptoms associated with the experiences of prolapse, such as difficulty in bowel evacuation, urinary urgency, feeling of urinary retention, persistent urinary tract infection, urinary incontinence, feeling of pain and friction, and waking up in the night with urgency to urinate.
