AI 摘要
Canada and Ukraine sign a century-long defense pact focused on drone technology and military collaboration.
international_relationsdefense_cooperation正向情感
本摘要由 AI 生成，请从原始来源核实细节。
Canada and Ukraine sign a century-long defense pact focused on drone technology and military collaboration.
本摘要由 AI 生成，请从原始来源核实细节。