The Chinese military is guilty of “irresponsible actions” toward American forces stationed at Djibouti’s Camp Lemonnier on the Horn of Africa, a senior U.S. military intelligence officer said. The home of U.S. military operations in the region and the biggest U.S. base on the continent, Camp Lemonnier is near the People’s Liberation Army’s first overseas military base, and the proximity has been a continuing source of tension. Rear Adm. Heidi Berg, director of intelligence at the U.S. Africa Command, told a small group of African-based journalists in a telephone media roundtable that China tried to “constrain international airspace” by barring...