Jet-Skis in Rwanda. Bodies Ashore in Congo.
On one side of the lake, lovers glide on canoes, friends ride jet-skis and families pose for pictures in the hazy sunset. On the other side, less than two miles away, dead bodies washed ashore while ammunition and discarded weapons littered the water. The shore of Lake Kivu in Rwanda offers leisure and relaxation. Across the border in the Democratic Republic of Congo, the same lake displayed devastation and misery after an armed group called M23 captured the lakeside city of Goma last month. Nearly 3,000 people were killed in the January offensive, according to the United Nations. “It is peaceful here, unlike over there,” said Exauce Shalako, a 20-year-old man from Goma who was lounging on the shore of Lake Kivu in Rwanda one afternoon this month. Mr. Shalako, who said he had lost a friend in the fighting, had crossed into Rwanda for a day at the beach. “We need to unwind, to have a change of scene,” he said. But while Rwanda appears peaceful at home, it is fueling war across the …