BERLIN German Chancellor Friedrich Merz warned Wednesday that the EU will not hesitate to retaliate if the US threatens new tariffs again. “We are neither naive nor defenseless. We have instruments at hand,” Merz told CEOs and senior industry representatives at the European Industry Summit in Antwerp, Belgium. “To counter unfair practices, we will use them, if necessary.” Merz cited last month's standoff between the US and European countries over Denmark's Arctic territory of Greenland, noting