sanctions would not only have a significant impact on the Russian economy, but also could be disruptive to the global economy." Russian stocks traded in New York fell the most in more than two weeks after obama's announcement. The Bloomberg Russia- u.s. Equity index of the most-traded Russian shares in the U.S. dropped 3.3 percent to 80.10 at 4 p.m. in New York. standard & Poor's cut its outlook for Russia to negative because of the risks posed by the conflict, affirming Russia's credit rated at BBB, the second-lowest investment grade. Russia's Reaction Kremlin spokesman Dmitry Peskov said Russia was surprised by some of the names on today's list, and considers the use of sanctions unacceptable. It's not true that Putin is an investor in Gunvor as the u.s. alleges, he said. In retaliation for the new u.s. sanctions, the Russian government barred entry of nine u.s. officials, including House Speaker John Boehner of Ohio and Senate Foreign Relations Committee Chairman Robert menendez of New Jersey. "The speaker is proud to be included on a list of those willing to stand against Putin's aggression," Boehner's spokesman, Michael steel, said in an e-mail. Edward J. Krauland, a partner at the law firm Steptoe & Johnson who's a specialist on international sanctions, said targeting individuals probably won't have a big an impact on Russia's actions. Hitting Russian economic sectors would. "I don't even think if they targeted Putin it would bring Mr. Putin to the table," Krauland said. "If you can isolate particular sectors of a country's economy that are significant, disproportionate parts of the economy, you're going to impose a hurt on that country." EU Debate The Eu, with closer economic ties to Russia, hasn't gone as far as the u.S. The 28-nation bloc saddled 21 Russian and Crimean officials with asset freezes and visa bans on March 17, and may widen that list to include close Putin associates at a summit in Brussels today and tomorrow