Foreign Secretary William Hague wrote on Twitter:
I welcome President Poroshenko's ceasefire plan in #Ukraine. Vital Russia gives visible support including stemming flow of arms
More top news
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.