U.S. IS SEEKING TOUGHER TACTICS AGAINST TEHRAN.

The Obama administration is scrambling to assemble a package of harsher economic sanctions against Iran over its nuclear program that could include a cutoff of investments to the country's oil-and-gas industry and restrictions on many more Iranian banks than those currently blacklisted, senior administration officials said Sunday. The administration also is seeking to build a broader coalition of partners for sanctions so that it may still be able to act against Iran even if China and Russia were to veto harsher measures proposed in the United Nations Security Council. [ABSTRACT FROM PUBLISHER]