Nathan Hager / Karen Moscow

Good morning, I'm Nathan Hager.

And I'm Karen Moscow in U.S.

Stock Index futures.

They are lower this morning.

S&P futures down a tenth of a percent, down six points.

Dow futures down a tenth of a percent, or 57 points.

NASDAQ futures down a tenth of a percent, or 25 points.

Ten-year Treasury up 132nd.

Yield 4.04%, a yield on the two-year 3.46%.

NYMEX crude oil is down 1.7%, down $1.11 at $64.30 a barrel.

And COMEX Gold is at $5,187 an ounce.

Nathan.

Karen, we begin with new tensions in the Caribbean.

The Cuban Coast Guard has shot and killed four people on a speedboat registered in Florida.

Cuba's government says the 10 armed people on board were Cubans living in the U.S.,

who plan to enter the country and fight the government.

Secretary of State Marco Rubio says the U.S.

will do its own investigation.

Secretary of State Marco Rubio spoke to reporters last night, and we get more from Bloomberg Deputy Washington Bureau Chief Laura Davison.

Bloomberg's Laura Davison reports Cuba's Interior Ministry says the U.S.