Final answer:
Russia and China threaten world security through actions like territorial occupation and military aggression in strategic locations.
Explanation:
Russia and China have both posed threats to world security through different actions:
- Russia has occupied territories claimed by other countries, such as Crimea from Ukraine and parts of Georgia and Moldova.
- China has engaged in aggressive actions in the South China Sea and set up military bases in strategic locations.
- Both countries' actions have raised concerns about global security and prompted responses from other nations to address these challenges.
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