The US is in discussions with Nato states over the deployment of a radar system as part of the European missile shield, US Department of State spokesman Mark Toner has said.
"We're talking to a number of countries within Nato about this radar system and when it might be deployed but I don't want to get into the substance of those discussions.
"In terms of Russia's opposition to missile defense plans ... We've been clear for many years now that this is not focused on Russia. It's not a threat to them in any way," Toner added.
Russia has, however, maintained firm opposition to the deployment of missile-defence systems near its borders.
The US and Nato claim that the missile shield is to protect Nato members from North Korean and Iranian missile attacks and not to direct them to Russia, RIA Novosti reported.