April 29 (Reuters) - The following are the top stories in the Wall Street Journal. Reuters has not verified these stories and does not vouch for their accuracy.

- U.S. President Donald Trump has instructed aides to prepare for an extended blockade of Iran.

- AI startup Parallel Web Systems, founded by former Twitter CEO Parag Agrawal, has raised $100 million in Series B funding, tapping investor appetite for startups building autonomous AI agents.

- Kendall Jenner's 818 Tequila has landed a minority investment from spirits group Sazerac, expanding the company's reach as the distiller looks to tap demand from younger drinkers.

- The U.S. Food and Drug Administration is looking to speed up clinical trials for new medicines by using artificial intelligence to simplify the collection and submission of study data.

- Industrial tools maker Ametek AME.N is in exclusive talks to acquire the testing and measurement businesses of valve and pump maker Indicor, owned by private equity firm CD&R.

- T-Mobile TMUS.O said it signed deals to form two joint ventures with Oak Hill Capital and Wren House, expanding its fiber internet business alongside its core wireless and broadband operations.