Put someone under enough stress and they will tell you the truth. This is how police interrogations are conducted. Put someone in a small room, deprive them of outside contact, and make sure they understand that this interrogation may be never-ending. Some people will then crack and confess to whatever crime they have been accused of. The ultimate form of stress, of course, is torture. However, using torture can actually elicit false confessions.
When the Prime Minister of Israel, Bibi Netanyahu, found himself under tremendous stress a couple of days ago; when it looked like he would lose his reelection bid; the confession came out. Netanyahu told the world – in direct opposition to what he has been saying for years – that he does not want peace with Palestine. He said that as long as he is Prime Minister of Israel, there will never be a two-state solution with Palestine.