Iranian lawmaker Heshmatollah Falahatpisheh said Saturday that the upcoming nuclear talks in the Iraqi capital Baghdad will fail if the West calls on Iran to suspend its uranium enrichment program, the semi-official Mehr news agency reported.

"If the issue of the suspension of uranium enrichment is raised in Baghdad, the talks will fail. The G5+1 is well aware of this point," Falahatpisheh was quoted as saying.

"Hardliners in Western countries are under the influence of the Zionist regime's lobbies and reactionary Arab countries. These groups are trying to invent some pretext to oppose Iran's nuclear program and prevent Iran and the G5+1 from reaching an agreement in Baghdad," said Falahatpisheh.

He also said that the Islamic republic expects world powers to take practical steps during the talks to ease sanctions against Iran in order to show that they have adopted a constructive approach.

Iran's permanent representative to the International Atomic Energy Agency (IAEA) Ali-Asghar Soltanieh said that the Islamic republic would never stop its uranium enrichment activities and would vigorously pursue its nuclear energy program, the local satellite Press TV reported on Friday.

Speaking at the Preparatory Committee for the 2015 Nuclear Non- Proliferation Treaty Review Conference in Vienna, Austria, on Friday, Soltanieh stressed that Iran would actively pursue its peaceful nuclear activities, and would be firmly committed to its obligations based on the nuclear Non-Proliferation Treaty (NPT).

Iran seeks to become well-versed in all fields of peaceful use of nuclear technology, in particular the uranium enrichment, as the Islamic republic is determined to develop its economy and boost its self-sufficiency, the Iranian envoy said.

Soltanieh said that the intervention of the UN Security Council and efforts meant to deprive countries of their right to acquire peaceful nuclear energy, which undermines the credibility of the NPT, according to Press TV.

On Thursday, Iranian President Mahmoud Ahmadinejad said that the Islamic republic would not retreat an iota from its rights under pressure of sanctions.

Talking in the northeastern city of Torbat-e Jam, Ahmadinejad said that "they (West) should know that this (Iranian) nation will not retreat even an iota from its inalienable rights," said Press TV.

Ahmadinejad made the remarks referring to the successive Western sanctions over the country's controversial nuclear program.

On May 7, the United States urged India to further reduce its oil imports from sanctions-hit Iran.

Earlier in the month, U.S. President Barack Obama also ordered the treasury department to target foreign entities and individuals who evade the U.S. sanctions against Iran.

Iranian Foreign Ministry has said that any new sanctions against Iran by the West will "affect the spirit" of next month's nuclear talks.

Israeli Prime Minister Benjamin Netanyahu on Wednesday told European Union foreign policy chief Catherine Ashton that Iran was exploiting the talks with world powers on its nuclear program to continue clandestine uranium enrichment activities.

"Iran is trying to gain time through talks with the West, and has no intention of halting its nuclear program," the Israeli daily Ha'aretz quoted Netanyahu as telling Ashton, who arrived in Jerusalem to brief Netanyahu ahead of the second round of talks with Tehran.

The last round of nuclear talks between Iran and the UN Security Council's five permanent members -- the United States, Britain, France, Russia and China -- plus Germany (G5+1) concluded in Turkey's Istanbul in April, with all sides describing the talks as positive and agreeing to meet again in the Iraqi capital on May 23.