"Until 1961, the last military execution to date
, hanging was the sole and official method. Later, the military introduced the electric chair, which was never used. Currently, lethal injection is the sole method.
The Espionage Act has never been successfully used in this context before. Also, the last people to be executed for espionage were the Rosenbergs in 1953, I doubt they'll break this roll without some actual evidence of significant harm caused. Also, since the Act, the Rosenbergs(who had a role equivalent to Pvt. Manning, by the way), further expansion of free speech has taken place, which could be an issue. Also, the federal government doesn't use death by firing squad. Also, firing squads don't aim for your ass, or your face, or your ass-face. Also, most nations in Europe (where he is) have rules against the death penalty, so that could make extradition problematic with that punishment still on the table. Also, the 1961 treaty between Sweden and the United States lists the offenses that qualify for extradition, and espionage is not among them. Also, this:
Also, Sweden can't extradite him until the business with the sex crimes allegations
that he's wanted for questioning over are cleared up. Also, Sweden isn't full of **** (I consider this to be the greatest obstacle to your plan to kill Assange)
You have an innumerable amount of serious obstacles to getting him shot in his assface. Unless you mean something extrajudicial.