German political party the Social Democrats have given the go-ahead for coalition talks with Chancellor Angela Merkel's Christian Democrats.

Discipline, or the subordination of the inexpert to the expert, likewise accounts for certain peculiarities of the German political parties.

At least 400 people protesting outside a meeting held by far-right German political party Alternative für Deutschland are arrested by riot police.

BSI has been working closely with German political parties and lawmakers to raise their security awareness and bolster security, but risks remain, Schoenbohm said.