Medvedev said that allowing refugees to enter the country without controlling them is a security risk. | Ekatherina Shukina/EPA Dmitry Medvedev: Angela Merkel’s refugee policy is ‘simply stupid’

Russia’s Prime Minister Dmitry Medvedev said Thursday that everything about the EU’s migration policy is “terrible.”

“It is just stupid to open the European doors and invite everyone that wants to come to Europe”, Medvedev told the newspaper Handelsblatt in a direct attack on Angela Merkel's "open-door" refugee policy.

Merkel's immigration policy has drawn criticism about the country's ability to integrate the nearly 1.1 million asylum seekers who entered Germany in 2015.

Medvedev said that allowing refugees to enter the country without controlling them is a security risk.

"Some of these people — and it’s not just a few strange individuals or utter scoundrels, but hundreds and possibly thousands — are entering Europe as potential time bombs, and they will fulfil their missions as robots when they are told to," Medvedev said.

He also warned for the risk of a possible "new world war" if Arab forces entered the Syrian war. When asked about proposals by some Arab countries to enter the conflict under a U.S. command, Medvedev said, "that would be bad because ground offensives usually lead to wars becoming permanent".

At the Munich Security Council on Thursday Russia and the U.S. agreed to try to implement a nationwide cease-fire in Syria in one week. The agreement still needs to be confirmed by the Syrian government and the opposition.