Americas top diplomat reportedly made the comment at the end of the latestround of international talks on the Syrian crisis in Vienna, Austria.
Kerry said parties to the Syria talks agreed on Saturday to accelerate efforts to end the conflict in the Arab country by launching negotiations between the government and opposition by January and holding elections within 18 months.
He told a news conference after the Vienna talks that the five permanent members of the UN Security Council also agreed to pass a resolution in favor of a ceasefire in Syria.
Kerry noted, however, that a Syria ceasefire does not apply to terrorist groups like Daesh (ISIL) or the al-Qaeda-linked al-Nusra Front and other extremist groups.
He added that the international negotiations still reached no agreement on the future of Syrian President Bashar al-Assad despite concrete progress in their talks on ending the Syrian conflict.
"We still differ on what happens to Bashar al-Assad," Kerry told reporters at the joint news conference with Russian Foreign Minister Sergei Lavrov and UN special envoy Staffan de Mistura.
Earlier, European Union foreign policy chief Federica Mogherini described as "very good" the latestround of talks on the Syrian crisis.
The Black Friday Effect
Elsewhere in his remarks, the US secretary of state condemned Fridays terror attacks in the French capital city, where scores of people lost their lives in a string of coordinated assaults claimed by ISIL.
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People lie on the pavement of a Paris street on November 13, 2015, following a series of deadly attacks in and around the French capital city. (AFP)[/caption]Kerry blasted the horrendous attacks and offered Paris Americas support.
He also said that determination to defeat terror only grew stronger after the Paris attacks.
Nearly 130 people died in Paris on November 13 in a spate of terrorist shootings and bombings- the worst attack on France since World War II.
By Press TV
