May 7 (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.

- Washington and Beijing are considering official discussions on artificial intelligence for an upcoming summit between President Trump and Chinese leader Xi Jinping.

- U.S. diplomats have been warned against using confidential information to place bets on gambling websites as money pours into wagers over U.S.-Iran negotiations.

- U.S. President Donald Trump’s advisers are increasingly worried that Republicans will pay a political price for the rising fuel costs resulting from the war in Iran.

- Kraft Heinz KHC.O CEO Steve Cahillane is focusing on value as he works to revive the business, cutting prices on items that had grown too expensive, boosting promotions, and introducing smaller package sizes at lower prices.