1004 GMT - U.S. Treasury yields decline, helped by lower oil prices and prospects that the Treasury might act again to tame high yields. The dollar rises on safe-haven demand ahead of Treasury Secretary Scott Bessent potentially unveiling sanctions against Iran later Monday. Global bonds are enjoying a small rebound but remain vulnerable, Pimco's Marc Seidner and Pramol Dhawan say. "Rising sovereign debt loads, a surge in AI-related corporate bond issuance, and lingering inflation anxiety tied to energy costs--and what that means for central bank policy--all play a role." The 10-year Treasury yield declines 2.8 basis points to 4.709%, according to Tradeweb. The 30-year yield falls 2.6 basis points at 5.249%. The DXY dollar index rises 0.2% to 99.00.