"Each one of these Patriots is a black mark on the world map, and is meant to cause a world war," Firouzabadi said, according to the Iranian Students' News Agency. "They are making plans for a world war and this is very dangerous for the future of humanity and for the future of Europe itself." Despite the warning, Firouzabadi did not threaten any action against Turkey in his speech to senior commanders at the National Defence University in Tehran. "We are Turkey's friend and we want security for Turkey," he said.
Nato's US commander said on Friday the alliance was deploying the anti-missile system along Syria's northern frontier because Assad's forces had fired Scud missiles that landed near Turkish territory. Damascus denies firing the long-range, Soviet-built rockets. But, forced on the defensive by mainly Sunni Muslim rebels, Syria's 47-year-old Alawite president has resorted increasingly to air strikes and artillery to stem their advances.
Warplanes bombed insurgents on the airport road in south-east Damascus on Saturday and government forces pounded a town to the south-west, activists said, in a month-long and so far fruitless campaign to dislodge rebels around the capital. Activists also reported heavy fighting in the Palestinian district of Yarmouk in southern Damascus between rebels and fighters from a pro-Assad Palestinian faction.
In the north, rebels said they had seized control of an infantry college in the northern Aleppo province, but the Syrian Observatory for Human Rights said there was still fierce fighting around the site by nightfall on Saturday, when it estimated at least 70 people had been killed across the country. Desperate food shortages are growing in parts of Syria and residents of Aleppo say fist fights and dashes across the civil war front lines have become part of the daily struggle to secure a loaf of bread.
Nato military commander Admiral James Stavridis said a handful of Scud missiles were launched inside Syria in recent days towards opposition targets and "several landed fairly close to the Turkish border, which is very worrisome". It was not clear how close they came. Turkey, a Nato member once friendly toward Assad but now among the main allies of the rebels, has complained for months of artillery and gunfire across the border, some of which has caused deaths. It sought the installation of missile defences some weeks ago.
"Syria is clearly a chaotic and dangerous situation, but we have an absolute obligation to defend the borders of the alliance from any threat emanating from that troubled state," Stavridis wrote in a blog on Friday. Batteries of US-made Patriot missiles, designed to shoot down the likes of the Scuds popularly associated with Iraq's 1991 Gulf War under Saddam Hussein, are about to be deployed by the US, German and Dutch armies, each of which is sending up to 400 troops to operate and protect the rocket systems.
Damascus has accused Western powers of backing what it portrays as a Sunni Islamist "terrorist" campaign against it and says Washington and Europe have publicly voiced concerns of late that Assad's forces might resort to chemical weapons solely as a pretext for preparing a possible military intervention.
In contrast to Nato's air campaign in support of Libya's successful revolt last year against Muammar Gaddafi, Western powers have shied away from intervention in Syria. They have cited the greater size and ethnic and religious complexity of a major Arab state at the heart of the Middle East - but have also lacked UN approval due to Russia's support for Assad.