Berlin added Albania, Kosovo and Montenegro to a list of so-called safe origin countries, which will result in swifter deportations for asylum seekers from those conflict-free states, in a bid to free up resources to deal with claims from citizens of war-torn countries like Syria.
Germany's open-door policy to Syrians has sparked clashes with eastern EU member states, in particular Hungary, which has adopted the opposite strategy of sealing off its borders to migrants.
Hungary's prime minister was preparing to defend his hard line at the UN General Assembly, as the number of migrants arriving via the Mediterranean reached nearly 515,000, according to the UN refugee agency (UNHCR).
Some 54 per cent of the arrivals were men, women and children escaping the four-year civil war in Syria, also a hot topic among world leaders meeting in New York this week.
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At the same time, some 2,980 people have perished or disappeared trying to make the perilous journey in often packed and unseaworthy vessels operated by profit-hungry people traffickers.
"Many are suffering from shock," the Medecins Sans Frontieres (MSF, Doctors Without Borders) charity, whose ship Dignity 1 saved 373 people, said on Twitter with a photograph of a distressed six-year-old boy.
The Libyan coastguard too reported that it rescued 346 migrants today, almost 100 of them women and children, found adrift on rubber boats off the country's coast.
The risks taken by migrants extended beyond the sea to the road.
From Greece, many of the migrants then travel up through the western Balkans and into EU member Hungary, bound for northern Europe, particularly Sweden and Germany.
Hungary, which has seen close to 300,000 migrants cross its borders this year, on September 15 sealed its border with Serbia, the main entry point to the European Union.