Our partners... are using the present situation to boost the presence of military bases and systems close to our borders - Vladimir Putin
BBC: Russia may stop implementing a key defence treaty because of concerns over US plans for a missile shield in Europe, President Vladimir Putin said.
Mr Putin made the threat during his annual address to parliament - which he said would be his last as president.
He also hit out at an influx of foreign money which he said was being used to meddle in Russia's internal affairs.
US Secretary of State Condoleezza Rice dismissed Russian concerns over the missile shield as "ludicrous".
BBC diplomatic correspondent Jonathan Marcus says Mr Putin's speech marks a significant raising of diplomatic stakes.
The Russian president suggested that his country should freeze its compliance with the 1990 Conventional Forces in Europe (CFE) treaty - which limits military deployments across the continent - until all Nato countries had ratified it. Russia in defence warning to US (Read on)
Mark Alexander
