Russia's President Vladimir Putin has vowed to "fiercely and consistently continue the fight against terrorists until their complete annihilation" following the twin suicide bomb attacks on the city of Volgograd.
David Cameron has tweeted his shock at the suicide bombings in Russia, which have claimed at least 31 lives.
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.