The British government must take "decisive and courageous steps" toward ridding the country of nuclear weapons, said the Catholic bishops of Scotland.

All eight bishops issued a joint statement calling for nuclear disarmament ahead of a July 18 vote in Parliament on whether to renew the Trident submarine-based nuclear weapons system.

They said Britain had an obligation under the 1968 Nuclear Non-Proliferation Treaty "to work toward the disposing and elimination of all nuclear weapons."

"Britain should take more decisive and courageous steps to revive that aspect of the treaty and not seek to prolong the status quo," the bishops said in the July 12 statement.