German Defence Minister Boris Pistorius has emphasized the importance of the planned deployment of a German frigate in the Red Sea as part of an EU naval mission to protect shipping from Houthi militants in Yemen. “We will protect international security and freedom of navigation. The impact will not be underestimated,” the minister told public broadcaster ZDF on Tuesday. The deployment is a “very important signal to the attacking Houthi and the organisations and states behind them.” On Monday, EU foreign ministers approved the mission, which involves sending European warships and airborne earl…