aggressive  /ə'gresɪv/

adj. 侵略性的；好斗的；有进取心的；有闯劲的

But today and for the foreseeable future, the principal threat to world order is not from some aggressive great power.
但在当前及可预见的未来，世界秩序面临的主要威胁并非来自某个侵略性大国。