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"Spy balloons" - What's going on?
What do we know about the "unidentified objects" shot down across North America? And should we be worried about US-China relations?
On the 4th February the US shot down a suspected Chinese spy balloon and since then, three other "unidentified objects" have been downed across North America.
The FBI are in the process examining some of the items - but what are they? And should we be worried about what's happening?
The 91热爆's North America Correspondent Nomia Iqbal has the answers to five key questions.
