Syrian President Bashar Assad denied on Sunday that his government had anything to do with last week’s gruesome Houla massacre, saying not even “monsters” would carry out such an ugly crime.

In a televised speech to parliament, Mr. Assad said his country is facing a “real war” and he blamed terrorists and extremists for the bloodshed. He expressed horror over last week’s massacre in the central Houla region, which killed more than 100 people, nearly half of them children.

“If we don’t feel the pain the pain that squeezes our hearts, as I felt it, for the cruel scenes especially the children then we are not human beings,” Mr. Assad said in his first comments on the massacre. His last public address was in January.

Mr. Assad, 46, denied that there is a popular will behind the uprising, saying foreign extremists and terrorists are driving the revolt.

“We have to fight terrorism for the country to heal,” Mr. Assad said on Sunday. “We will not be lenient. We will be forgiving only for those who renounce terrorism.”

The opposition and the government have exchanged accusations over the Houla killings, each blaming the other. U.N. investigators have said there are strong suspicions that pro-regime gunmen are responsible for at least some of the killings.

The revolt began last March with mostly peaceful protests, but a ferocious government crackdown led many in the opposition to take up arms. Now, the conflict has morphed into an armed insurgency.

“A battle was forced on us, and the result was this bloodshed that we are seeing,” Mr. Assad said.

Mr. Assad, who inherited power from his father in 2000, still has a firm grip on power in Syria some 15 months into a revolt that has torn at the country’s fabric and threatened to undermine stability in the Middle East.

Activists say as many as 13,000 people have died in the violence. One year after the revolt began, the U.N. put the toll at 9,000, but hundreds more have died since. A ceasefire plan brokered by international envoy Kofi Annan is violated by both sides every day. Fears also have risen that the violence could spread and provoke a regional conflagration.

A group known as the Free Syrian Army is determined to bring down the regime by force of arms, targeting military checkpoints and other government sites. A U.N. observer team with nearly 300 members has done little to quell the bloodshed.

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