As the European Union continues to fracture, debates in Germany could change Berlin's domestic and foreign policies, reshaping the entire Continent in the process. A group of conservative politicians is questioning German Chancellor Angela Merkel's ability to address the immigration crisis, the second rebellion against her leadership in less than a year. Regardless of whether Merkel keeps her job, German conservatives are and will continue to be concerned about the rise of anti-establishment and anti-immigration groups in the country and their increasing influence over mainstream parties. If Germany takes a more isolationist stance on EU issues, Europe will only further fragment....