Secretary of State Marco Rubio was far less chatty than other officials in the controversial Signal discussion on U.S. airstrikes in Yemen.

This thing was set up for purposes of coordinating how everyone was going to call. You know, when these things happen, I need to call foreign ministers, especially of our close allies. We need to notify members of Congress.

As ExxonMobil produces oil offshore in Guyana, Venezuela has asserted claims to a large region of the country, recently sending a naval vessel into the waters.

U.S. Secretary of State Marco Rubio vowed Thursday that the United States will respond forcefully if Venezuela attacks Guyana, amid an ongoing territorial dispute that includes massive oil and gas reserves.