HONOLULU -- The nuclear cooperation agreement announced between U.S. President George W. Bush and Indian Prime Minister Manmohan Singh on July 18 marked a major shift in U.S. policies aimed at stopping and reversing proliferation. If implemented, it would result in new rules of global nuclear commerce that the Bush administration has previously opposed.

Because the deal was generated from the top down, the deal's particulars have not been spelled out. The details could mark the difference between an agreement that makes us all safer or more vulnerable to nuclear dangers. Congressional hearings and oversight are needed, and tough questions must be asked.

U.S. efforts to improve ties with India began in a serious way at the end of Bill Clinton's presidency and has significantly picked up speed during the Bush administration. Bush has increased military cooperation with New Delhi, including the offer of advanced combat jets and their coproduction in India. The United States has long been ready to increase trade and investment in India. The Bush administration has also relaxed restrictions on space cooperation, and is working more closely than ever with New Delhi on regional security problems.