June 9 (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.

- Iran and Israel halted exchanges of fire on Monday after hours of cross-border attacks, but signaled the possibility of renewed strikes.

- The Pentagon on Monday added around two dozen Chinese companies, including Alibaba Group 9988.HK and Baidu 9888.HK, to a list of firms it claims aid Beijing's military.

- OpenAI said it has confidentially filed for an initial public offering with U.S. regulators, setting the stage for a potential listing as soon as this fall, though it has not yet decided on timing.

- Perrigo PRGO.N said CEO Patrick Lockwood-Taylor has resigned after the board found his personal conduct violated company code, with director Albert Manzone appointed interim president and CEO.

- A federal judge struck down on Monday the Trump administration's $100,000 fee for new H-1B visa applicants, ruling the charge unlawful.

- Apple AAPL.O on Monday unveiled a new AI version of its Siri chatbot developed with Google technology, as the iPhone maker looks to strengthen its artificial intelligence capabilities.