Syrian army stepped up bombings in Aleppo in its fight against rebels.

The Syrian army today stepped up their bombardment of Aleppo, the second city of Syria , and elsewhere in the country, while rebels faced in acts that killed at least 80 people, according to opponents.

From the northern city of Aleppo, the activist said Hisham Abu Efe that military helicopters fired Salahedin neighborhoods, Seif al-Daula, Al and Al Azamiyah Hamadaniya, among others.

The intensity of the attacks was such, said Hisham, injured people lay on the ground without anyone being able to approach their care.

The Syrian regime forces yesterday launched a major military offensive to recover Aleppo in a fight that Army rebels Free Sirius (ELS) named as "the mother of all battles".

For its part, the Syrian authorities claimed to have killed at least fifteen suspected terrorists-as called the regime-armed opponents in violent clashes with the army in the neighborhood of Bab al Hadid.

ATTACK IS A "NAIL IN THE COFFIN OF ASSAD"
Secretary of Defense United States , Leon Panetta, said today that the attack by Syrian President Bashar al Assad against Aleppo is a "nail in (his) coffin," according to the agency AFP.

"It's pretty clear that Aleppo is another tragic example of the kind of indiscriminate violence that the Assad regime has committed against his own people," Panetta told reporters aboard a U.S. military plane en route to Tunisia.