Russia voiced deep concern over NATO enlargement into former Soviet spheres of influence, as well as concern over the United States national missile defense program feeling both NATO expansion and the US missile defense program as a threat to Russian national security.
Russia voiced deep concern over this NATO enlargement into former Soviet spheres of influence, and was particularly opposed to NATO's expansion to the Baltic states. Russia also voiced convern over the United States national missile defense program, as it saw both the NATO expansion and the US missile defense program as a threat to Russian national security.