• German President Joachim Gauck and Chancellor Angela Merkel, from left, walk through the city during celebrations marking the 25th anniversary of the German Unification in Frankfurt, Germany, Saturday, Oct. 3, 2015. (Boris Roessler/Pool Photo via AP)

    Germany marks 25 years of unity, facing new challenges

    BERLIN (AP) — Germany marks a quarter-century as a reunited nation on Saturday, with two leaders from the formerly communist east heading a country that increasingly asserts itself as Europe’s political heavyweight — and now faces a new challenge in a refugee influx that will demand deep reserves of resourcefulness and patience.