June 23 lede stories for the day

• 'Brexit' Vote: U.K. Heads to the Polls in Historic Referendum on EU Membership (Read More)
• The Brits Have No Good Options on Europe Vote (Read More)
• Stocks Rise With U.S. Futures as Pound Gains While U.K. Votes (Read More)
• Trump and Clinton Place Bets to Woo Undecided Voters (Read More)
• China brushes off doubts over support on South China Sea, says it is growing (Read More)
• After setbacks, N.Y. prosecutors resume insider trading crackdown (Read More)
• Twilio Raises More Than Expected in IPO (Read More)
• The Chinese Connection Fueling America's Fentanyl Crisis (Read More)
• Platinum Partners Said to Be Raided by FBI Amid Bribes Probe (Read More)
• McDonald's gets bids for China, HK stores sale in up to $3 billion deal (Read More)
• Rebel 'Romance' Means Gold and Cocaine to Flow After Peace Deal (Read More)
• Mateen altered looks, researched anti-psychotic drugs before attack (Read More)
• Democrats Occupy House Floor to Compel Votes on Gun Bills (Read More)
• Japan probes suspected North Korean rocket nose cone amid growing missile concerns (Read More)
• BlackBerry reports first-quarter slump in revenue, net loss (Read More)
• Heroin use at 20-year high in U.S. drug 'epidemic', U.N. says