Sean Penn has voiced his disgust at Prince William's deployment to the Falklands as part of routine training.
The award-winning actor, whose 2011 film 'The Tree Of Life' is nominated for Best Picture at the Academy Awards this month, has been labelled "moronic" by a Tory MP as a result of his outburst.
E! Online quotes Penn as saying: ""There are many places to deploy a prince. It's not necessary when the deployment of a prince is generally accompanied by a warship, to send them into seas of such spilled blood.
"It's unthinkable that the United Kingdom can make a conscious decision to deploy a prince within the military to the Malvinas, knowing the great emotional sensitivity both of mothers and fathers in the United Kingdom and in Argentina who lost sons and daughters in a war over islands with a population of so few."
Wills is completing search and rescue training as part of his RAF exercises, leaving Kate Middleton to complete various royal engagements on her own.
A former army officer and current Tory MP, Patrick Mercer, has responded angrily in the Daily Mail, saying: "What on Earth has this got to do with Sean Penn? He's neither British nor Argentine and seems to know nothing about the situation judging by his moronic comment.
"A good number of his movies have been turkeys, so I suppose we shouldn't expect much better coming out of his mouth."
Wills & Kate double team