WikiLeaks has accused US President Barack Obama of “thin-skinned vindictiveness” after European governments denied airspace to an aircraft carrying Bolivian President Evo Morales because of suspicions it might be carrying US intelligence leaker Edward Snowden.

Julian Assange has also condemned the bugging of Ecuador's London embassy, where he is living, after Ecuadorean Foreign Minister Ricardo Patino announced that a listening device had been found in the ambassador's office.

Julian Assange urged Kevin Rudd to denounce the bugging of the Ecuadorean embassy. Credit:AP

In an extraordinary move, France and Portugal revoked flight clearances for the Bolivian President's plane on Tuesday after representations were reportedly made by the US State Department.

Mr Morales was flying home from an energy conference in Moscow and his aircraft was hastily rerouted to Vienna, Austria.