• Obama arrives in Cuba for historic visit as deals announced
  • Brazilian mining giant's ex-CEO confirmed dead in plane crash

Here are highlights of Sunday’s top news stories:

U.S. Republican presidential front-runner Donald Trump’s campaign said it will hire more professional security to keep order at its raucous allies and prevent more skirmishes between campaign staff and protesters.

Sherwin-Williams is buying Valspar for $9.3 billion to form the world’s biggest paint maker. The price of $113 a share is a 35 percent premium to Valspar’s closing price on Friday.

Monsanto is exploring acquisitions or partnerships in crop chemicals with BASF and Bayer after losing out in the battle for Syngenta.

Barack Obama touched down in Cuba in the first visit by a sitting U.S. president in 88 years, sending a powerful signal in his determination to end the more than half-century trade embargo against the island nation. He arrived shortly after Marriott, joining hotel competitor Starwood, received permission from the Treasury to conduct business activities in Cuba.

China’s central bank chief said corporate debt levels are too high, and that the country has problems with illegal fundraising and insufficient markets for raising equity capital.

U.S. Senate Majority Leader Mitch McConnell remained steadfast in his refusal to consider Obama’s nomination to the Supreme Court, saying he won’t change his mind even if Hillary Clinton is elected president in November and brings with her the threat of nominating someone more distasteful to McConnell’s fellow Senate Republicans.

Vale confirmed that a Saturday night small-plane crash outside Sao Paulo killed its former CEO, Roger Agnelli, who over 11 years built the Brazilian company into the world’s second biggest miner after Rio Tinto.

Asia stocks futures pointed higher at the opening. Middle Eastern markets were mixed.

Flights to and from France were snarled by an air traffic controllers strike that will cause more cancellations into Paris and Marseille on Monday.

FlyDubai’s CEO defended the decision by his pilots to land in high winds at an airport in southern Russia even though three other airliners approaching at the same time diverted. The plane crashed, killing all 62 people on board.

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