Controlling space weapons : hearings before the Committee on Foreign Relations, United States Senate, Ninety-eighth Congress, first session on S. Res. 43, a resolution expressing the sense of the Senate that the President of the United States invite the Soviet Union to negotiate a verifiable ban on anti-satellite weapons as a first step toward prohibiting all space-based and space-directed weapons : S.J. Res. 28, a joint resolution calling for immediate negotiations for a ban on weapons of any kind in space, April 14 and May 18, 1983.