"I'm not one of those people who believes war, cold or otherwise, with China is likely. It's certainly not desirable," Carter said in his remarks yesterday at Harvard Institute of Politics JFK Junior Forum.
"But you don't get anything for free in this world. We have to create the conditions under which change can occur, including a change of great consequence in the Asia-Pacific region in a way that is -- preserves the peace and stability," he said.
Carter said the single most important factor in that 70-year history has been the pivotal role of American military power in the region.
The US aims to keep that going, he said.
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"Now, that's not a matter of stopping China from rising. It's on the contrary. That's not our approach at al. Our approach is everybody rises. That's fine with us. It's not to exclude. Our approach has always been an inclusive one. So we actually seek to include China, India," Carter said.
"What has worked for 70 years in this region and has allowed everyone, including China and if Chinese think about it, and many do recognise that this has been great for China. China can do its own thing, raise hundreds of millions out of poverty, develop in a way that is congenial to China," he said.
"But again, you can't take it for granted, this environment of peace and security," he added.
China, he alleged has been dredging islands in the South China sea, and making unilateral claims to territory.