Most significant of all, the new partnership deal with Iraq, including a status of forces agreement that would then replace the existing Security Council mandate authorizing the presence of the U.S.-led multinational forces in Iraq, will become a sworn obligation for the next president. It will become just another piece of the complex global security framework involving a hundred or so countries with which Washington now has bilateral defense or security cooperation agreements. Last month, Sen. Hillary Clinton urged Bush not to commit to any such agreement without congressional approval. The president said nothing about that on Saturday, but Lute said last fall that the Iraqi agreement would not likely rise to the level of a formal treaty requiring Senate ratification. Even so, it would be difficult if not impossible for future presidents to unilaterally breach such a pact.