In the 20th century the main threat to international security was superpower conflict; today it is failing states.

20世纪对国际安全的主要威胁是超级大国之间的冲突，而如今的威胁是国家的没落。

The threat to international security posed by outbreaks is an obvious example.

疾病暴发对国际安全造成的威胁是一个明显的例子。

The NATO-led International Security Assistance Force has 43,000 troops in Afghanistan.

北约领导的国际安全援助力量在阿富汗有4万3千多人。

He says the competition this could create may also threaten international security.

他说这样所产生的竞赛也威胁着国际安全。

The dangers this strategy could pose for international security are even more apparent.

对于国际安全而言，这一策略造成的危险甚至更加明显。