US President Donald Trump has signed an executive order to begin the process of withdrawing the US from the World Health Organization (WHO).

“Oooh, that’s a big one,” the newly inaugurated US president said as he approved the document after arriving back at the White House. It was one of dozens of executive actions he put his signature to on day one in office.

This marks the second time Trump has ordered the US be pulled out of the WHO.

Trump was critical of how the international body handled Covid-19 and began the process of pulling out from the Geneva-based institution during the pandemic. President Joe Biden later reversed that decision.