Bloomberg Germany’s Foreign Ministry summoned the Turkish ambassador to demand the immediate release of a German human-rights activist, with Chancellor Angela Merkel’s spokesman calling the detention a “serious and sad” turn for German-Turkish relations. Foreign Minister Sigmar Gabriel returned from a vacation to Berlin to respond to the “dramatic escalation” in the actions of Turkish President Recep Tayyip Erdogan’s government, …

Bloomberg Oil bulls grappling with OPEC’s weakened resolve to curb output are also having to worry about waning demand in the world’s biggest buyer of overseas crude. State-run China Petroleum & Chemical Corp., the globe’s largest oil refiner, will process about 1 million metric tons a month less than previously planned over June to August, according to people with knowledge …

Bloomberg Oil was steady amid mixed signals on US crude invento-ries, with industry data showing supplies increased last week while government statistics were expected to indicate a decline. Futures were little changed in New York after adding 0.8 percent. US inventories rose by 1.63 million barrels last week, according to people familiar with the API data. That contrasts with a …