View of a stenciled wall depicting a dog with a head that tries to represent US President Barack Obama's and the sentence "Barking dogs seldom bite" in Caracas on March 10, 2015. Venezuelan President Nicolas Maduro was set Tuesday to request special legislative powers to confront what he termed "imperialist aggressions" from the United States, as relations between the countries deteriorated further. AFP PHOTO / FEDERICO PARRA (Photo credit should read FEDERICO PARRA/AFP/Getty Images)
