A two-day conference of the 10-nation Shanghai Cooperation Organization in Kyrgyzstan shows the limits of U.S. economic warfare.

© Pavel Mikheyev/Reuters

The renewed attacks were the latest sign that the war that began six months ago appears far from over.

© Reuters

The first attacks in a month jolted energy markets. The average U.S. gasoline price remained 37 percent higher since the war began.

© Michelle Groskopf for The New York Times

The exchange on Sunday was the first known military action between the two nations in a month, raising the risk of a renewed round of fighting.

© Arash Khamooshi/Polaris for The New York Times