Text: But the analogy, they say, is the nuclear Non-Proliferation Treaty that took 20 years to obtain 178 members--and only after the United States used sanctions to force the hand of reluctant governments.
Entailment: According to them it is analogous to the nuclear Non-Proliferation Treaty.
Contradiction: The U.S. did not interfere in other governments' decisions to accept the nuclear Non-Proliferation Treaty.