The attacker injured four people from Hong Kong before being shot dead by police.
Cologne authorities say 40 percent of the attacks were related to sexual assault.
Syrian refugees could be returned to the first EU member state in which they arrived.
German newspaper Bild cited a confidential government forecast raising the number from 800,000 in summer.
The new reports says that the educational levels of refugees will leave them "poorly prepared" for workforce.
Germany's vice chancellor said the refugee crisis is a bigger threat to EU unity than Greece.
Budapest could send troops to stop refugees crossing from Serbia.
A personal account of outreach and understanding in Jordan's refugee neighborhoods.
Thousands of Europeans decide to play a part in the greatest refugee crisis since World War II.
18,000 refugees arrived in Germany over the weekend.
Trains to western Europe however have reportedly been suspended "indefinitely".
History, culture and economy all help explain Germany's more welcoming stance.
The president of Germany's industry body explains why his country need asylum seekers.
More than 17,000 people took part in Germany's largest anti-immigrant rally on Monday in the eastern city of Dresden.