The sentence is final unless overturned by the Supreme Court. An appeals court found Mr. Menem, above, and 11 others guilty in March, overturning his acquittal at trial in 2011. Mr. Menem, 82, who served two terms as president from 1989 to 1999, acknowledged signing secret decrees to export weapons to Venezuela and Panama, but said he had no idea that the tons of rifles and ammunition made in Argentina would end up in Ecuador and Croatia. Given his age, Mr. Menem could be allowed to serve his sentence at home.