Russia's new battle tank has suffered an apparent embarrassing breakdown just a day before being officially unveiled in the country's World War Two Victory Parade.
The Armata T-14 was taking part in final rehearsals when it ground to a halt in the middle of Moscow's Red Square.
With the vehicle's driver waving a red flag to signal his predicament an aborted attempt was made to tow it out of the way. The tank eventually moved off under its own steam.
A loudspeaker announcement later declaring the tank's impromptu pause had been planned in advance and was merely a rehearsal should any such misfortune befall any other military hardware during the May 9th Kremlin parade.
The Armata's manufacturer also taking to social media to declare that the tank "was in full working order and left on its own".
The crisis in the Ukraine and President Putin's increasingly aggressive stance towards the West means many of Europe's political leaders are staying away from the event.
Britain will be represented by the grandson of Sir Winston Churchill, the Conservative politician Sir Nicholas Soames.
Germany's Angela Merkel will visit the Russian capital a day later to lay a wreath at a war memorial.