safd david courtright, you and others have raised questions about use of drones. why do you think it's not an effective tool? >> these weapons can destroy targets but they cannot achieve the political goal of ending the threats from terrorism. they have posed many grave dangers in terms of security, legal and moral questions for our country. as you said, the technology is spreading. as many as 50 countries may now be developing or purchasing this technology, including countries like china, russia, india, pakistan, iran, hezbollah has deployed an iranian-designed drone aircraft. iran is reportedly developing a drone with a 1,000-mile range. these are for surveillance now but it's not that difficult to attach missiles and bombs to these weapons, to these drones. what kind of future are we creating for ourselves, for our children, our grandchildren? a world where all major states would have this technology. the threat of war striking of missiles coming out of the sky with no warning would be persuasive. >> brown: you've raised a lot of issues there. so let me get to