"What we are witnessing in Syria are the achievements and victories by the [Syrian] government and its allies in defeating terrorists," Peyman Jebelli said in an interview with Iran's Arabic-language Al-Alam news network in the Syrian capital Damascus on Saturday.
He added that the US had no option but to orchestrate such an "ineffective" attack, which he noted would fail to have any impact on the fight against terrorism in Syria.
He said the joint strikes showed that the US-led military coalition could not hinder the Syrians fight against terrorist groups.
"This [act of] aggression will have no impact on the performance of the Syrian army, nation and resistance," the IRIB world service chief pointed out.
The US, Britain and France launched airstrikes against multiple places in Syria early Saturday following US President Donald Trump's order despite international warnings against further escalation of the situation in the Arab country and across the Middle East.
The US-led military coalition has accused the Syrian government of having allegedly attacked the militant-held town of Douma in Eastern Ghouta region on April 7 and claimed that the Saturday airstrikes had been aimed at deterring Syria's further use of chemical weapons.
The Syrian government has denied the allegations, saying such claims were aimed at halting Syrian forces' advances in the region and were made by the terrorists themselves.
"The chemical fabrications, which did not serve the terrorists and their sponsors in Aleppo and Eastern Ghouta, will not serve them today either, as the Syrian state is determined to end terrorism in every square inch of Syrian territory," read a statement by the Syrian government.
Jebelli further emphasized that regional countries, particularly Saudi Arabia, were not able to engage in a direct war against Syria, but gave money to the US to wage wars.
He said the US-led military coalition carried out the attacks with the purpose of creating obstacles for an international team expected to investigate the suspected chemical attack in Douma "because they are confident that this team cannot find anything proving their claims."
He emphasized that the resistance front would continue its efforts until the elimination of terrorists.
Following an invitation from Damascus, inspectors from the Organization for the Prohibition of Chemical Weapons (OPCW) are expected to arrive in Syria over the weekend to investigate the reported attack.
The Syrian government surrendered its stockpiles of chemical weapons during a process monitored by the OPCW in 2014.
