Story highlights President Barack Obama spoke Monday at the COP21 conference held outside the French capital

"We have come to Paris to show our resolve," he said, speaking both of climate change and the threat of terror

Be part of CNN's COP21 coverage: We'd like to hear from you on how climate change could affect you personally. Upload your video here, or tag #2degrees on Twitter, Facebook and Instagram.

Paris (CNN) Combating climate change will prove to be a rebuttal of terrorist efforts, President Barack Obama declared at the opening of a major climate summit in Paris.

"What greater rejection of those who would tear down our world than marshaling our best efforts to save it," Obama said Monday at the COP21 conference, being held at a highly secured site outside the French capital two weeks after ISIS terrorists carried out a bloody rampage.

"We have come to Paris to show our resolve," Obama said, saying he offered condolences to the French people.

Obama interspersed his climate message with meetings on fighting ISIS during his stay in Paris, which began with a midnight tribute outside the Bataclan nightclub, where ninety people died during the November 13 attacks.

Obama laid a single white rose on a pile of bouquets, honoring the victims of the attacks alongside French President Francois Hollande and Paris Mayor Anne Hidalgo.

Read More