Donald Trump's health is back under the microscope after fresh claims that the 80-year-old US president fell asleep during a key Oval Office meeting in Washington last week, despite the White House insisting Trump remains fully fit for office.
Concerns about the president's stamina have been swirling for months, fuelled by a string of public stumbles, visible bruising and what critics say looks like confusion during formal events. Those worries have merged with a more specific allegation, that Trump has developed a habit of nodding off in plain view, even when the cameras are rolling.
