US exits Open Skies Treaty
美国退出开放天空条约

The US said on Sunday that it officially withdrew from the Open Skies Treaty.
美国政府11月22日宣布，即日起美国正式退出《开放天空条约》。

"Today marks six months since the US submitted our notice of withdrawal from the Treaty on Open Skies," National Security Adviser Robert O'Brien said in a tweet.
美国国家安全顾问罗伯特·奥布莱恩发推文说：“自美国通报退出《开放天空条约》决定已过去6个月。”

The Trump administration submitted the notice of its decision to withdraw from the treaty in May, and the Sunday announcement marked the end of a six-month notification process.
特朗普政府于今年5月向该条约其他缔约国通报退约决定，11月22日的声明标志着为期6个月的通知程序的结束。

The treaty, which became effective in 2002, allows its 34 State Parties to conduct short-notice, unarmed reconnaissance flights over the others' entire territories to collect data on military forces and activities.
《开放天空条约》于2002年起生效。34个缔约国可按规定对彼此领土进行短时的非武装方式的空中侦察，以收集有关军事力量和活动的数据。

By 2019, over 1,500 Open Skies flights have been conducted since the deal entered into force, according to media reports.
据媒体报道，自条约生效以来，截至2019年，条约框架内总飞行架次超过1500次。