TEHRAN, July 17 (Xinhua) -- Iran's defensive power, including its missile program, is non-negotiable, lran's president's chief of staff said on Wednesday.

"The country's defensive might is a redline. We will not be holding negotiations in this area under any circumstances, and have said so on repeated occasions," Mahmoud Va'ezi was quoted as saying by Press TV.

Va'ezi was reacting to recent western media reporters that Iran has announced readiness for talks with U.S. on the country's ballistic missile program.

On Tuesday, the spokesman for Iran's mission to the United Nations, Ali-Reza Mir-Yousefi, also said that lran's missile program is under no condition negotiable.

U.S. administration has put Iran under sanction pressures partly because of its developing missile program, urging Tehran to quit missile tests.

Iran has dismissed the U.S. calls for giving up the tests and negotiation over defensive program.