Biographer says signs of mental illness were 'very clear' as premier struggled with Lebanon War fallout, wife's death; in unaired interview segment, Begin said he took pills

While liberal icon may be more known as loser of lopsided presidential election, his close ties to US Jewry earned him trust of Israeli defense minister at Camp David

A member of the Foreign Relations Committee, Richard Stone was an adviser on the 1978 Camp David Accords