U.S. President Barack Obama said on Friday that the ceasefire in Libya must be implemented immediately otherwise there will be "consequences" for Libyan leader Muammar Gaddafi.

The UN Security Council voted on Thursday in favor of a new resolution on Libya that encompasses a no-fly zone and "all necessary measures" against forces loyal to Gaddafi. It also stipulates military action against Gaddafi's troops if he continues attacking civilians.

The resolution was approved by 10 council members, with Brazil, China, Germany, India and Russia abstaining.

"Gaddafi has a choice. The resolution has clear conditions that must be met. A ceasefire must start immediately," Obama said during a live address in Washington

Obama added that Gaddafi should stop troops advancing on Benghazi, the insurgents' main stronghold.

He also said the United States would not deploy ground troops in Libya as the main goal was to protect people.