The unravelling of the German talks came as a surprise since the main sticking points - immigration and climate policy - were not seen as FDP signature issues. (businessinsider.com)
Immigration was the main sticking point in the negotiations. (fortune.com)
The rate of value - added tax is the main sticking point to getting a deal, with Greece's proposed target for 2016 still some way short of creditor demands, the officials said. (bloomberg.com)