Iran blames Saudi Arabia for today's terror attack, vow "revenge".

Today's horrific terrorist attack on the Iranian parliament and Ayatollah Khomeini's mausoleum could be a trigger that might escalate into a full scale war between Iran and Saudi Arabia. Iran's Revolutionary Guard vowed to retaliate against the 'terrorists' that orchestrated twin attacks on the country's capital Wednesday, also laying blame on Saudi Arabia for the attack, Reuters reported. The attacks began midmorning when assailants armed with Kalashnikov rifles stormed the parliament building. One of the attackers later blew himself up inside, where a session had been in progress, according to a statement carried by Iran’s state TV. Attackers dressed as women burst through parliament’s main entrance in central Tehran, deputy interior minister Mohammad Hossein Zolfaghari said, according to the semi-official Tasnim news agency. “One of them was shot dead and another one detonated his suicide vest,” he said. About five hours after the first reports, Iranian news agencies said four people who had attacked parliament were dead and the incident was over. Soon after the assault on parliament, another bomber detonated a suicide vest near the shrine of the Republic’s revered founder, Ayatollah Khomeini, a few kilometers south of the city, Zolfaghari said, according to Tasnim. Even thought ISIS have taken responsibility for the terrorist attack that claimed at least 12 people and injured 43 Iran is putting the blame on Saudi Arabia. Iran's Revolutionary Guards say Saudi Arabia was behind twin attacks in Tehran, and promises “revenge” for them. Iran is currently waging a full scale war against ISIS both in Iraq and Syria. ISIS have been known to have links to Saudi Arabia, who have financed the terror organization, and many others, thorough unofficial back-channels over the years in the hopes that it will destablize Syria and attack the Syrian regime of Basahr Al Assad. Currently Iran and Saudi Arabia are waging a proxy war in Yemen, where Iran is supporting the Houthi rebels while Saudi Arabia supports the Yemeni government. Tensions are already close to breaking point between Iran and Saudi Arabia, and this terror attack could lead for further escalations, and a possible armed conflict between the two states, which in turn will have huge repercussion not just the middle east, but for the whole world.