Iraq, an adherent to the treaty, conducted an advanced nuclear weapons program during much of the 1980's while allowing outside inspection of its nuclear reactors.
The latch did not click; but the door was far enough shut to pass outside inspection.
Lee suggested establishing the hotline during Perry's trip to Seoul last month, when tensions escalated over North Korea's continued refusal to accept outside inspections.
But only in the last three years has India been able to make large quantities from domestically built sites so that the plutonium is not subject to outside inspection.
The control wires were run along the dirt floor to switches at the door and window, and were set as to be invisible to outside inspection.
Islamabad will not sign the nonproliferation treaty nor allow outside inspections unless India also does.
They had been intended for convenience in rigging during overhauls and to facilitate outside inspections while underway; the twins now used them to park bicycles.
North Korea's continuing refusal to allow outside inspections raised the possibility that a third meeting between the two might be canceled.
But the South African authorities never allowed any outside inspection of their pilot uranium enrichment plant, which could be used for military ends.
They would have to permit outside inspection and soon.