Two rockets hit a Hezbollah-controlled district in the southern part of Lebanon's capital on Sunday, residents said, wounding several people.
The attack may have been a response to a speech by the militant group's leader Hassan Nasrallah a day earlier, in which he committed to fighting in Syria's conflict on behalf of his ally President Bashar al-Assad.
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The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.