Friedrich Merz, leader of the Christian Democratic Union (CDU), has pledged to impose tough border controls if elected chancellor in next month's vote. View on euronews

The conservative leader wants to impose strict border controls after knife killings in Aschaffenburg this week.

Opposition head Friedrich Merz is calling for reforms to Germany's migration laws after a deadly knife attack in which an Afghan man facing deportation is the main suspect - even if they pass with support from the far-right Alternative for Germany (AfD).