Criticism of Joe Biden’s mental health and 81 years of age have dogged him throughout his presidency, with allegations of him being too old and senile for office coming in hard and fast in the run-up to the presidential elections this year. Many of these claims are supposedly backed up by video evidence of the US president acting strangely, but they’re usually either manipulated or taken out of context. Take the video below for example, which appears to show Biden wandering off or otherwise being distracted at a G7 summit in June. Italian Prime Minister Giorgia Meloni seemingly has to lead him…