US missile defence system activated in Romania

A US missile defence site in Romania, which protects Europe from ballistic missile threats, has been activated.

The move angered Russia, which opposes having the advanced military system in its former area of influence.

Nato secretary general Jens Stoltenberg tried to reassure Russia as he spoke at a ceremony attended by US, Nato, and Romanian officials at the Soviet-built base, 180km south-west of Bucharest.