“We can both act in the interests of our country in the matter of extending START III, and make it clear to Russia that we are very concerned about the situation with Solar Winds, or reports of awards for the heads of Americans in Afghanistan,” RIA Novosti Biden quotes.
Moscow has repeatedly denied all accusations.
The American leader also stressed that he would "not hesitate" to raise problematic issues in dialogue with Russia.
Earlier, the official representative of the Russian Foreign Ministry, Maria Zakharova, said that experts from Russia and the United States began practical work on extending the START Treaty.