
BERLIN—Germany’s government has withstood an assault from within, but the process revealed a ruling coalition increasingly beholden to the growing nationalist tendencies of its smallest member. The Christian Social Union, or CSU, operates only in the southeastern state of Bavaria, on Germany’s border with Austria. But in an unusual arrangement dating back to 1949, it has been the sister party of the Christian Democratic Union, or CDU, which competes in the country’s 15 other states and which Chancellor Angela Merkel has led since 2000. Although the CSU holds the fewest seats of any party in the Bundestag, Germany’s national parliament, […]