"It is not about abrupt tweets or high ratings. It is about our collective security. Europe cannot accept the fact that something, which has been building for decades, would be deliberately destroyed because of the desire to provoke," Maas told Der Spiegel magazine.
The German foreign minister added that Europe would continue working on maintaining and building balance in its relations with Washington, but the continent must also become strong in the meantime.
"Europe has no other choice but to boost its significance in defense and security," Maas said.
Trump has repeatedly pressed other NATO member states to meet their annual defense spending obligations within the alliance since taking office in January 2017.
Last year, only six of the 29 NATO members — the United States, Greece, Estonia, the United Kingdom, Romania and Poland — spent 2 percent of their GDP on defense, the target set by the alliance.