* 时间复杂度：O(n)，空间复杂度：O(n)
If the talks fail, there is uncertainty over what the US may do regarding a possible military attack against Iran, and when it might act. Questions remain over what this could mean for the wider region, with Iran warning it would retaliate and even attack Israel.
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В России ответили на имитирующие высадку на Украине учения НАТО18:04
The Conservative shadow energy secretary, Claire Coutinho, said barring data centres from the UK "because of domestic net zero targets will do nothing to tackle climate change, but it will make us all poorer".