Read the text and determine if the sentence is true:

Vanunu, 49, was abducted by Israeli agents and convicted of treason in 1986 after discussing his work as a mid-level Dimona technician with Britain's Sunday Times newspaper.

Sentence: Vanunu's disclosures in 1968 led experts to conclude that Israel has a stockpile of nuclear warheads.
Choices:
[-] yes
[-] no
A:
no