Acknowledging that it was facing resource constraints in dealing with a number of conflicts around the world, the US has said it was looking up to emerging powers such as India and China to play their roles in bringing about stability.
US defence secretary Leon Panetta said the US had a number of global problems at hand, including its involvement in Afghanistan, Iraq and Libya.
"These are challenging times. We're involved in two wars. We're in a Nato mission in Libya. We're confronting other threats from Iran and North Korea. We continue to be in a war on terrorism," Panetta said at the National Defence University.
He said increasing cyber attacks were another rising concern that the US is fighting off.
"We have rising powers, nations such as China, India and Brazil, not to mention Russia, that we have to continue to look at in terms of their role in providing stability in the world."
Panetta said Washington will not have to choose between national security and fiscal responsibility, but pointed out that the US has "a special role" in the world.