As part of talks between United States and Israeli officials this week over Iran's nuclear program, U.S. diplomats detailed the sanctions they may put in place against Iran if the Persian theocracy refuses to engage in dialogue, according to Haaretz . The American officials also asked Israel to tone down public expressions of concern or threats over Iran for the next several weeks. U.S. officials were led by National Security Advisor James Jones, who visited Israel this week to discuss Iran and other regional issues. U.S. Secretary of Defense Robert Gates held similar talks in Israel this week as well. Among the possible sanctions that could be used are the removal of insurance on trade with Iran, and sanctions on any company that deals with Iran. Sanctions could also include a ban on Iranian ships in American and European ports, and possibly a ban on Iranian planes as well. The proposed sanctions would also aim to limit Iran's ability to import refined oil. Iran has limited abilities to refine its own oil, and is dependent on other countries for trade in gasoline and other refined oil products. The U.S. has committed to engage in dialogue with Tehran for an indefinite period of time before imposing sanctions over Iran's refusal to cooperate with international nuclear inspectors. American officials have stated that the attempt at dialogue will not be indefinite, but have refrained from giving a specific time by which either dialogue will succeed or sanctions will be enforced. Several European countries, among them Britain, Germany and France, are supportive of the U.S. initiative, and are expected to agree to sanctions on Iran if America begins to back sanctions over talks. However, two of the United Nations Security Council member states, China and Russia, have expressed objections to putting harsh sanctions on Iran no matter what the results of dialogue may be.