sabre-rattling
noun /ˈseɪbə rætlɪŋ/
  /ˈseɪbər rætlɪŋ/
(US English saber-rattling)
 [uncountable]- the act, by a government, of trying to frighten the government of another country by threatening to use military force武力威胁;武力恫吓 - There has been renewed sabre-rattling between the two countries.这两个国家之间再次爆发武力威胁。 
 
- There has been renewed sabre-rattling between the two countries.