It’s Rubio
By 
Looks like Little Marco needs to diplomat:
President-elect Donald J. Trump is expected to name Senator Marco Rubio of Florida as his secretary of state, three people familiar with his thinking said on Monday, as Mr. Trump moves rapidly to fill out his foreign policy and national security team.
Mr. Trump could still change his mind at the last minute, the people said, but appeared to have settled on Mr. Rubio, whom he also considered when choosing his running mate this year.
Mr. Rubio was elected to the Senate in 2010, and has staked out a position as a foreign policy hawk, taking hard lines on China and Iran in particular.
He initially found himself at odds with those Republicans who were more skeptical about interventions abroad, but he has also echoed Mr. Trump more recently on issues like Russia’s war against Ukraine, saying that the conflict has reached a stalemate and “needs to be brought to a conclusion.”
It’s a fairly conventional choice, mostly I think designed to shore up Trump’s position with old line Republicans. Marco doesn’t have a ton of experience in the diplomatic field and won’t know where the bodies at State are buried, but as a prominent Senator will command a degree of respect that Rex Tillerson could not. Hard to say what it means for Trump’s foreign policy more generally, but seems to suggest that Latin America will remain an active area of interest.