Russia has joined the search for Argentina’s missing submarine.
It is one of a dozen countries involved in the search to find out what happened to the ARA San Juan and its 44-person crew.
The sub last made contact on Wednesday 15 November.
Hopes of finding survivors have faded since a suspected explosion was reported near its last-known location.
Some of the relatives of the missing crew members have expressed anger at the government and the navy, saying the 34-year-old submarine was in ill repair and unsafe.
Russia’s Antonov aircraft – one of the world’s largest planes – landed in Comodoro Rivadavia, a city in southern Argentina. The aircraft is carrying an unmanned submersible that can search for the missing submarine of depths of 1000m.
The Russian Ministry of Defence has also sent a scientific exploration ship, Yantar, which is yet to arrive having set off from near the coast of West Africa. It will be able to search at an even deeper level.