Germany will expand border controls to all nine of its neighbors in an effort to curb irregular migrant arrivals. The move comes after a series of extremist attacks in the country, which have heightened public fears and boosted support for the far-right Alternative for Germany party. The border controls will be in place for six months and will include temporary structures at land crossings and spot checks by federal police. Other EU members, including Poland and Austria, have expressed concern over the measure.