It was sheer political theatre. And it was this meeting - rather than the weaponry - that appears to have irked US President Donald Trump.
As the parade began, Trump sent a sharply-worded message on Truth Social, accusing the three leaders of conspiring against America. This may well have been the reaction President Xi had hoped for as he kept Putin to his right and Kim to his left throughout the parade. The moment may have even been designed to infuriate a US president who would perhaps prefer to be the centre of the world's attention.