Hosseini said Iran still keeps the doors open for negotiations and is prepared for these negotiations to resume but without any preconditions.
Hosseini said international pressure will not force Tehran to give up its civilian nuclear technologies.
Iran has been at the center of international concerns since January 2006 over its nuclear program, which some countries suspect is geared toward nuclear weapons development. Tehran has consistently denied the claims, and says it needs nuclear power for civilian purposes.
The UN Security Council unanimously adopted Resolution 1737 on Iran December 23, which imposed sanctions on the country's nuclear weapons programs but allowed officials to make foreign trips and companies to do business abroad. The sanctions banned activities involving uranium enrichment, chemical reprocessing, heavy water-based projects, and production of means for nuclear weapons delivery.
Hosseini said Tehran welcomes any proposal [on the Iran nuclear issue], which will secure the Islamic Republic's right to civilian nuclear technologies within the framework of the Nuclear Non-Proliferation Treaty.
Hosseini also said Iran will continue cooperation with the UN nuclear watchdog, despite its recent refusal to admit 38 inspectors from the International Atomic Energy Agency.