BRUSSELS (AP) — The European Union's struggle to staunch the flow of hundreds of thousands of people across its borders represents the continent's biggest refugee emergency in over half a century. Many EU countries are blaming Germany — the preferred home of many seeking sanctuary or jobs in Europe — for encouraging the masses to continue making the perilous journey. Increasingly cold weather is a new enemy, as the EU and member states race to set up shelters along thousands of kilometers (miles) of the "migrant route" out of Greece northwest to Austria. Yet neither the tragic recent deaths in the Aegean; nor the scenes of shivering migrants trudging through Balkan mud; nor the mounting chaos and squalor in asylum centers in even wealthy Germany should come as any surprise. Since the drowning of more than 350 migrants off Italy two years ago pushed leaders to vow a comprehensive response, there has mainly been foot-dragging and bickering. [...] given Greece's debt mountain, and the austerity imposed on citizens, no one dares criticize the country in public, and the government has appeared too proud to accept help. Plans for the EU's Frontex border agency to start work in Croatia near the Serbian border are on hold, awaiting a response from the government in Zagreb. Faced with little likelihood that the flow of migrants will ease, Germany has notified the EU that it plans to extend border checks on people until at least Nov.