The USA is expanding its strategic arsenal of weapons along the Russian borders, so Russia is forced to respond adequately to expansion of NATO potential.
The expansion of NATO’s military potential is destroying the current global security system and prompting Russia to take countermeasures.
Recurring pro-Kremlin disinformation narrative about NATO threatening Russia.
NATO's missile defence system is purely defensive and not directed against Russia. Bilateral agreements between the US and host nations do not allow missile sites to be used for any purpose other than missile defence.
Also, NATO has reached out to Russia consistently, transparently and publicly over the past 26 years. The Alliance created unique cooperation bodies – the Permanent Joint Council and the NATO-Russia Council – to embody its relationship with Russia. It has invited Russia to cooperate on missile defence, an invitation extended to no other partner.
NATO is not encircling Russia. Russia's land border is just over 20,000 kilometres long. Of that, less than one-sixteenth (1,215 kilometres), is shared with NATO members. Russia has land borders with 14 countries. Only five of them are NATO members.