[1/2] A central processing unit (CPU) semiconductor chip is displayed among flags of China and U.S., in this illustration picture taken February 17, 2023. REUTERS/Florence Lo/Illustration/File Photo WASHINGTON, June 18 (Reuters) - For over 40 years, a landmark agreement between the United States and China has yielded cooperation across a range of scientific and technical fields, a powerful sign that the rivals could set aside their disputes and work together. Now with bilateral relations in their worst state in decades, a debate is underway within the U.S. government about whether to let the U.S.-China Science and Technology Agreement (STA) expire...