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Robert Downey JR's Iron Man is the focus of the latest trailer released for superhero spectacular, Avengers Assemble.

The movie, which sees the world's most powerful superhumans team up to take down an alien menace, is set to be one of the biggest movies of the year, bringing together characters such as Iron Man, Thor, Captain America and The Hulk in one movie.

Downey JR, who has played the Iron Man role since the 2008 movie, takes centre stage in the latest trailer. "We need a plan of attack," cries Chris Hemsworth as thunder-god Thor, with Downey JR's Iron Man replying: "I have a plan. Attack."

Watch the Iron Man Avengers Assemble trailer below. The movie is due to open on UK screens on 26 April.