Iranian technicians work at a facility near Isfahan, south of Tehran, that produces uranium fuel for a heavy-water nuclear reactor (File)Some Iranian lawmakers are saying Iran will reject a U.N.-backed proposal for Iran's uranium to be enriched abroad.

Thesemi-official ISNA news agency quotes a prominent conservativelawmaker laeddin Boroujerdi saying Iran will not send away any ofits 1,200 kilograms of enriched uranium.

France, Russia and theU.S. are urging Iran to trade about 7 percent of its low-enricheduranium for nuclear fuel, which would assuage international fears thestockpile would be used to make a bomb.

Another conservativelawmaker, Hossein Naqvi Hosseini, said Iran could not trust theinternational promises, therefore it could not accept such anagreement.

He said Iran could buy uranium directly from another country or enrich it themselves.

Russia'spresident Dmitri Medvedev says if Iran "takes a less constructivestance" in international talks, the possibility of further sanctionscould not be excluded.

In an interview with Germany's DerSpiegel magazine, Mr. Medvedev said sanctions usually represent a stepin a "dangerous direction." But he said they may be necessary,nonetheless.

The International Atomic Energy Agency says it has not yet heard a formal response to the proposal from Iran.

TheU.N. Security Council has hit Iran with three sets of sanctions for itsrefusal to stop enriching uranium, a process that can be used to makenuclear weapons.

Iran says its atomic program is aimed at generating electricity.

Israel'sdeputy foreign minister says Israel will attack Iran if it continues ona path of nuclear defiance. Danny Ayalon told Britain's Sky News thatIran has expressed no desire to halt its nuclear program.

He accused Iran of conducting stalling tactics in hopes of "buying time" on its uranium enrichment work.  

Israelperceives Iran as its greatest threat in part due to remarks by Iran'spresident calling for Israel to be "wiped off the map."