LE BOURGET (APP) – US President Barack Obama has warned global warming posed imminent security and economic risks.

He said a as negotiators embarked on an 11-day race to seal a UN pact aimed at taming climate change.

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But, speaking after attending an historic climate summit with 150 other leaders, he voiced confidence mankind would make the tough decisions to brake rising temperatures.

Obama and others employed lofty rhetoric Monday to inject energy into the start of the UN negotiations, which are due to deliver a global masterplan on December 11.

The president followed that up Tuesday with grim warnings for the near future if the temperature curve went unchecked.

“Before long we are going to have to devote more and more of our economic and military resources, not to growing opportunity for our people, but to adapting to the various consequences of a changing planet,” Obama said.

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“This is an economic and security imperative that we have to tackle now.”

Despite this, Obama said he believed the global political landscape was shifting, boding well for Paris and beyond.

“Climate change is a massive problem, it is a generational problem. And yet despite all that, the main message I have got is, I actually think we are going to solve this thing,” Obama said.