Environment activist Greta Thunberg is projecting 'power and authority' by taking control of the narrative when she speaks, a body language expert said today.

Judi James told MailOnline that the campaigner projects the 'image of a heroine' and her confidence on the global stage 'would match or even exceed seasoned leaders'.

The activist was deported by Israel yesterday, a day after the Gaza-bound ship she was on was seized by the Israeli military. She has now returned to Sweden.

Of the 12 activists on board the Madleen, which was carrying food and supplies for Gaza, four including 22-year-old Ms Thunberg agreed to be deported immediately.

Ms Thunberg has now called for the release of the other activists who were detained aboard the Madleen, and described a 'quite chaotic and uncertain' situation.