The Bush administration said Wednesday a proposal by Iran for nuclear negotiations falls short of U.N. demands that it cease uranium enrichment, and the U.S. began plotting unspecified "next moves" with other governments. The State Department, in a terse statement, acknowledged that Iran considered its proposal to be a serious one. "We will review it," the statement said in what appeared to be a conciliatory gesture to a government it regularly denounces as a sponsor of terror. "We are consulting closely, including with other members of the Security Council, on next steps," it said. The United Nations has set a deadline of next Thursday for a formal reply by Tehran. President Bush met with Secretary of State Condoleezza Rice at the White House and then discussed Iran's proposal in a telephone call with U.N. Secretary-General Kofi Annan .