According to Adamov, his fears are based on the fact that "U.S. authorities have not used the opportunity to hear [him] in court as a free person."
"[The Americans] do not need me in court," he said in an interview with Echo Moscow radio station. "As a matter of fact, they do not need a trial at all."
"They need a bearer of state secrets forcibly brought to the United States with his hands tied," he added. "You have to figure out the reason why on your own."
Adamov also said the main reason U.S. authorities were seeking his extradition was "to prove that the power elite in Russia is deeply corrupted, and it is unthinkable to leave such a country with large nuclear potential without control."
The Americans are pursuing the same goal with the scandal surrounding the corruption of Russian diplomats involved in the Oil for Food program, the ex-minister added.
Adamov said his fears about extradition to the United States "should concern those people in Switzerland who will be making the decision."
Adamov reiterated his intent to return to Russia and explained why he had refused a simplified extradition to his native country before.
"I still believe my arrest was illegal, and I, as a free person, have the right to return to Russia," the ex-minister said.
However, after a Swiss court upheld the decision to arrest him, Adamov said, "The extradition to either country [Russia or the U.S.] was [his] only option."
He denied rumors about the alleged pressure applied on him by Russian authorities at the time of his decision to agree to extradition to Russia.
The former Russian minister also said he intended to bring the issue of his arrest in Switzerland to the European Court of Human Rights.
Adamov, who headed the Russian Atomic Energy Ministry in 1998-2001, was arrested on May 2 in Bern on an official extradition request sent to Switzerland by the U.S. Department of Justice on June 24.
U.S. authorities accused Adamov and his business partner Mark Kaushansky, a U.S. citizen, of embezzling $9 million allocated by the U.S. government for implementation of nuclear security projects in Russia.
Russia sent an extradition request to Switzerland on May 17.
Russia's Prosecutor General's Office has accused Adamov of fraud and abuse of office.
