“I congratulate the Indonesian government for ratifying the CTBT, the 156th country to do so. This is a significant step towards the Treaty’s entry into force and to a global ban on nuclear weapon test explosions. I now call on the remaining eight states that need to ratify the treaty for it to enter into force to do so. I hope the Indonesian example of a change of direction in policy on the CTBT after 15 years will send a positive signal to them.
“Putting in place a legally binding ban on nuclear test explosions is one of the Government’s key disarmament and non-proliferation priorities: the UK was among the first to sign and ratify, and we contribute world-leading expertise to help build up the Treaty’s verification regime.
“The Treaty’s Entry into Force will strengthen our own national security and will strengthen global security - we will all be safer with this Treaty than without it.”
The CTBT bans any nuclear explosions, for military or civil purposes, and establishes a complex verification system to monitor compliance.