On Friday, United States secretary of state Antony Blinken said he was canceling a high-profile diplomatic visit to Beijing following the discovery of a large, high-altitude Chinese balloon that has been drifting over the US this week. The Chinese Ministry of Foreign Affairs said in a statement on Friday that the airship is an off-course weather balloon and has denied that it is an espionage tool. A senior US Department of Defense official told reporters on Thursday, though, that “clearly the intent of this balloon is for surveillance.”