Those are two different sentences. One is that attack makes him sad, the other one is that Germany needs to protect itself against terrorism. The idea that this implies this was a islamist attack is highly speculative.
The certainty of which is currently unsupported by the fact that the very next sentence in the article is
Nancy Faeser, the interior minister, on Friday called for a thorough investigation into the attack. “If the investigations reveal an Islamist motive, this would be a further confirmation of the great danger posed by Islamist acts of violence,” she said.
The german interior minister being a mixture of Homeland security and the DOJ. So shouldn’t we rather take her comment at value than the two sentences from the finance minister?
Probably make the bright pixels dark and the dark pixels bright.