Weeks after India and China engaged in their deadliest border clash in decades, the sight of an American nuclear-powered aircraft carrier entering the Bay of Bengal drew attention across the region.

The carrier, the USS Nimitz, and its strike group deployed to the area in mid-July to conduct an exercise with the Indian Navy in pursuit of a "free and open Indo-Pacific,” according to a statement by the U.S. Navy’s 7th Fleet, whose headquarters are in Japan. But as tensions soar between India and China, two nuclear-armed neighbors, the joint operation took on a greater significance.

"It was symbolic,” said Tanvi Madan, the director of the India Project at the Brookings Institution. "It’s also signaling to China and others that the U.S. is standing by India.”