China’s ability to conduct conventional cruise and ballistic missile strikes on Guam is growing, even as the island’s strategic importance to the United States is increasing. This report examines the reasons behind China’s development of new conventional weapons that can reach Guam, the array of forces it could employ against Guam in a potential conflict, and policy options for the United States to consider in response. Accuracy limitations and platform vulnerabilities render the current risk to U.S. forces on Guam in a potential conflict relatively low, but China’s commitment to continuing to modernize its strike capabilities indicates the risk will likely continue to grow going forward.