The European Commission on Tuesday unveiled a new trade doctrine aimed at curbing China’s ability to squeeze Europe’s economy, and at preventing European companies from exporting sensitive, military-linked technology that could give China an edge. The policy, still in its early stages, highlights how the European Union is seeking to align itself with the United States in limiting China’s access to sensitive markets and industrial secrets. It also reflects growing concerns about Beijing’s deepening alliance with Moscow. The announcement in Brussels came in a busy week for Europe-China relations. The Chinese premier, Li Qiang, is visiting Germany, where he met...