BREAKING OVERNIGHT \u2014 \u201cRussian Security Service Detains Wall Street Journal Reporter,\u201d by WSJ\u2019s Daniel Michaels: \u201cThe Federal Security Service said Thursday it had detained Evan Gershkovich, a U.S. citizen, in the eastern city of Yekaterinburg. The FSB said in a statement that Mr. Gershkovich, \u2018acting on the instructions of the American side, collected information constituting a state secret about the activities of one of the enterprises of the Russian military-industrial complex.\u2019 \u2026\n\u2018The Wall Street Journal is deeply concerned for the safety of Mr. Gershkovich,\u2019 the Journal said in a statement. Mr. Gershkovich reports on Russia as part of the Journal\u2019s Moscow bureau.\u201d\n\u201cTrump\u2019s lead grows in GOP primary race, now over 50% support,\u201d by Fox News\u2019 Victoria Balara: \u201cThe survey, released Wednesday, finds [Donald] Trump has doubled his lead since February and is up by 30 points over Ron DeSantis (54%-24%). Last month, he was up by 15 (43%-28%). No one else hits double digits.\u201d See the poll\nOur colleagues Hailey Fuchs, Clothilde Goujard and Daniel Lippman have a big investigation up this morning into the transatlantic political influence machine that TikTok put together as it battles efforts to regulate or ban the platform because of ties to China.\nRead the full story: \u201cHow TikTok built a \u2018team of Avengers\u2019 to fight for its life\u201d\nAnd today, VP Kamala Harris is in Tanzania, where she\u2019ll meet with President Samia Suluhu Hassan, the country\u2019s first female head of state.\nBut the bulk of Harris\u2019 Africa trip is now over. And from the administration\u2019s point of view, it was a success \u2014 but perhaps not for the reasons you think.\nSubscribe to the POLITICO Playbook newsletter\nRaghu Manavalan is the host and senior editor of POLITICO's Playbook Daily Briefing.Jenny Ament is the executive producer of POLITICO Audio.