Obama urges cooperation to end chaos in Syria in speech before UN

The president urged nations to work together to find a way to end the chaos in Syria, and he blamed al-Assad for creating a power vacuum in the country that has allowed the terror group ISIS to fester.

The "dangerous currents" in Syria and other nations threaten to bring "a darker, more disordered world," Obama said.

"I've said before and I will repeat: There is no room for accommodating an apocalyptic cult like ISIL, and the United States makes no apology for using our military as part of a broad coalition to go after them," he continued, using his administration's preferred acronym for ISIS.

Obama said the U.S. is prepared to work with any nation, including Russia and Iran, to resolve the conflict. Russian President Vladimir Putin was not in the assembly hall while Obama spoke.

When Putin addressed the General Assembly, he spoke about a "great and tragic migration of peoples" that necessitates that members of the U.N. unite to stabilize Syria.

The way to do that, he said, is to "cooperate with the Syrian government and its armed forces who are valiantly fighting terrorism face-to-face."

To do otherwise would be a "mistake," he said.

"We should finally acknowledge that no one but President Assad's armed forces and Kurdish militia are truly fighting the 'Islamic State' and other terrorist organizations in Syria," Putin said.

The Russian leader went on to blame a "military coup" for unrest in Ukraine.

A call to maintain U.N. ideals

Syria and the growing menace of ISIS terrorists are likely to occupy a lot of the discussion at this week's meeting of the world's megapowers.

French President Francois Hollande and President Hassan Rouhani of Iran are expected to speak Monday afternoon.

Obama chided leaders who have said that the United Nations' ideals are "unattainable and out of date" for the era.

"We cannot turn back those forces of integration ... no nation can insulate itself from the threat of terrorism" or the flow of migrants or the danger of a "warming planet," he said.

"No matter how powerful our military," Obama said, "how strong our economy, we understand" that the "Untied States cannot solve the world's problems alone."

Obama received applause for his comments about Cuba. The U.S. policy on Cuba wasn't working, he said, so "we changed that." Though the United States has "differences with the Cuban government," those disagreements can be addressed through diplomacy, increased revenue sharing and "people-to-people ties," the President said.

Earlier, United Nations Secretary-General Ban Ki-moon welcomed world leaders to the weeklong meeting by giving an impassioned speech that covered at least a dozen serious problems the world faces.

He urged warring factions in Syria to put down their weapons and other countries to help millions of refugees born of that war. For those risking their lives, especially those taken advantage of by human traffickers, it's critical that aid come not only because international law mandates it, but because it would reflect "basic compassion," he said.

It is not enough to save lives, Ban said; the world must help the refugees find stability and happiness. "Our aim is not just to keep people alive but to give them a life."

Ban nodded toward the party of officials from Iran sitting in the assembly. They quickly put on their headphones to hear the translation of what he was saying.

Ban praised the nuclear agreement between Iran and six world powers and said he hoped that cooperation would be an example for other countries to follow.

Climate change promises, and return to Syria as topic

After Obama, Chinese President Xi Jinping took the podium and urged members of the international community

to adopt measures to combat climate change. His remarks come a few days after announcing a new cap and trade

"We should firmly pursue green, low-carbon, circular and sustainable development," he said. "China will shoulder its share of responsibility and China will continue to play its part in this common endeavor."

King Abdullah II of Jordan brought back the topic of instability in the Middle East.

His speech focused largely on urging that extremists must be defeated.

The peaceful world is under threat from "the outlaws of Islam," he said, who "target religious differences hoping to kill cooperation and compassion."

Jordan is among one of the many nations joined with the United States in a coalition to degrade ISIS terrorists.

"Let us ask if they were not defeated," he said. "Can we tolerate a future where mass murder, public beheadings, kidnapping and slavery is a common practice?"

He asked the U.N. members to think for a moment what it would be like to not find against extremists who would seek to destroy — as ISIS has — cultural treasures that had stood for thousands of years.

The battle against such terrorists, Abdullah said, is a "third world war."