After a more than one-year-long deadlock over talks on Iran's suspected nuclear program, Tehran said Wednesday it has replied to European Union (EU) Foreign Policy chief Catherine Ashton's October letter over resumption of nuclear talks.

Saeed Jalili, Iran's chief nuclear negotiator, said in the letter that Iran welcomes restart of talks and that "success of the talks is subject to the constructive response of the G5+1 to the initiatives of the Islamic republic."

The EU confirmed on the same day it received a letter from Iran offering to restart nuclear talks that have been in stalemate for more than one year.

Other world powers like China, Russia and Turkey recently have also been calling for early resumption of nuclear talks between Iran and the six nations, namely Britain, China, France, Russia, the United States and Germany.

Besides, an International Atomic Energy Agency (IAEA) delegation will visit Iran on February 21 and 22 to hold talks over Iran's nuclear issue, after an earlier visit at the end of January that Iranian media termed as "positive and constructive."

Amid escalating tensions between Tehran and the West and Israel over Iran's nuclear program, related parties should snap up the above-mentioned hard-won opportunities and restart the nuclear talks as early as possible, which is to the benefits of all sides.

Western sanctions on Iran, a major oil exporter, and Iranian officials' strong-worded remarks in return have caused global oil market to fluctuate, which may deal a further blow to the West's already fragile economies.

In addition, the sanctions slapped by western countries have caused sufferings for ordinary Iranians who are struggling painfully to pay rising living costs due to inflation resulting from fast depreciation of Iranian currency rial against U.S. dollar, which Iranian manufacturers need to pay imports of raw materials for production.

For the West's part, stopping making harsh remarks and military threats, and going back as soon as possible to the negotiating table would be helpful. Just like an Iranian foreign ministry official put it: "stop pressuring Iran, and you will see how Iran will respond."

On the Iranian side, showing some sincerity and making less provocative rhetoric over its nuclear program are crucial and in the interests of Iranian people whose normal lives were affected by more and more sanctions.

In a word, after a 15-month impasse and amid the war rhetoric against Iran, the concerned parties should seize the above- mentioned rare opportunities to restore multi-party nuclear talks early, show their sincerity and resolution to solve Iran's nuclear issue through diplomacy instead of military options, and spare no efforts to promote an early solution of the nuclear crisis before it slides into a dangerous and uncontrollable situation.