Why are we selling weapons to Saudis when they want to wipe Israel off the map?

Why are we selling weapons to Saudis when they want to wipe Israel off the map?
from the daily alert July 1
Despite the differences of opinion, the report said Washington and Riyadh were in talks towards the signing of an extensive weapons deal, in which the Saudis are to purchase two squadrons of F-15 fighter jets, as well as maintenance and development services for similar products acquired in the past, at a cost of $20 billion. (Ynet News)
See also Report: Saudi King Abdullah Wants to Wipe Israel and Iran Off the Map - David Kenner
On June 5, Saudi Arabia's King Abdullah reportedly told French Defense Minister Herve Morin that "There are two countries in the world that do not deserve to exist: Iran and Israel." Georges Malbrunot, a French journalist with Le Figaro, said two sources have confirmed the story. (Foreign Policy)