U.S. Secretary of State John Kerry arrived in Brussels Friday morning for counterterrorism talks with leaders from the European Union and Belgium. He also will pay his respects to the 31 people who died and 270 who were wounded in this week’s Islamic State-linked suicide bombings at the Brussels airport and a subway station. Police in Brussels detained at least six people in counterterrorism raids Thursdaynight and early Friday as authorities hunt for two suspects in the Brussels bombings and try to head off another terrorist attack.