Iran wound consider enriching its uranium to "any level it wishes" in case the West imposes further sanctions on Tehran over its nuclear program, a parliament speaker said on Thursday.

The Western countries are not after resolving the longstanding dispute over Tehran's nuclear program, and the Islamic republic keeps a close watch on their behavior, the speaker, Ali Larijani, was quoted as saying by Press TV.

"Some lawmakers are pursuing a motion based on which Iran would enrich uranium to any level it wishes if the West moves to impose new sanctions against the Islamic republic," Larijani said.

He urged the West to seize the opportunity created by the ongoing nuclear negotiations and help close Iran's nuclear dossier.

On Wednesday, a Foreign Ministry spokeswoman said that any possible sanctions against Iran will jeopardize the nuclear talks between the Islamic republic and the world powers.

Iran's economy is under pressure due to Western sanctions. The United States and its Western allies suspect that Iran's disputed nuclear program might have weapon-grade dimensions, while the Islamic republic has denied the allegations.