Venezuelan opposition leader Juan Guaidó. Photo: Eva Marie Uzcategui/Getty Images

Venezuelan security forces detained Roberto Marrero, a lawyer and key aide to opposition leader Juan Guaidó, on Thursday morning after raiding his home, per the AP.

The big picture: The U.S. has warned Maduro and the Venezuelan government to not take action against Guaidó, who is supported by over 50 countries in his bid to be Venezuela's president and is also being investigated by Venezuelan prosectors for an alleged attack on the country's power grid. Maduro, backed by allies Russia and Cuba, says Guaidó is part of a U.S. plan to overthrow his government.

What's happening: Marrero's detainment was reported by neighboring lawmaker Sergio Vergara, who said that his home was also raided. Guaidó tweeted on Thursday morning: "We do not know his whereabouts. He must be released immediately."

Go deeper: Inside Trump's Venezuela pivot

Go deeper

Ford names James Farley as new CEO amid ongoing turnaround effort

James Hackett, left, is retiring as Ford CEO. Jim Farley, right, takes over Oct. 1. Photo: Ford

Ford announced Tuesday that James Farley will take over as its next CEO, replacing James Hackett, 65, who is retiring after three years in the job.

Why it matters: It leaves Farley to complete the company's ongoing turnaround effort. The transition will be that much harder as the industry tries to navigate the coronavirus-induced economic slowdown which shuttered Ford plants for two months on the eve of some of its most important vehicle launches.

Updated 2 hours ago - Politics & Policy

Watch the full "Axios on HBO" interview with President Trump

In this episode of “Axios on HBO”, President Trump discusses his handling of the coronavirus pandemic, the upcoming election and much more with National Political Correspondent Jonathan Swan.

The interview was filmed on Tuesday, July 28 and aired Monday, Aug. 3 on HBO.

Mergers and acquisitions make a comeback

Illustration: Sarah Grillo/Axios

A slew of high-profile headlines led by Microsoft's expected acquisition of social media video app TikTok helped bring the Nasdaq to another record high on Monday.

Why it matters: The mergers-and-acquisitions market looks like it's bouncing back, joining the revived credit and equity markets as well as the market for new public companies through IPOs and special purpose acquisition companies (SPACs).