Elon Musk has increasingly waded into foreign politics from the perch of his social platform X — a development that experts say likely raises questions for U.S. allies about his role in foreign

Musk's Tesla stake rose by $111 billion — 65% — last year. All but $2 billion of Musk’s Tesla gain and about 98% of what other Tesla shareholders gained came after Election Day, when Musk began hanging out extensively with Donald Trump and started calling himself Trump’s “first buddy.