A clampdown is a sudden restriction on a particular activity by a government or other authority.
例句
...a clampdown on the employment of illegal immigrants...對雇用非法移民的打擊Ironically, the latest clamp-down has just led to renewed international criticism.讓人哭笑不得的是，最近的制裁結果只是導致新一波國際社會的批評。
英漢詞典釋義
n.
壓制;取締;嚴禁
If anything, it could create a clampdown on democratic tendencies by regimes in neighbouring countries.如果其主張會產生什么結果的話，那就是會使周邊國家的政府對民主潮流進行壓制。