Tom Vanden Brook

USA TODAY

Sen. Marco Rubio took a Twitter shot on Sunday at Donald Trump's apparent choice for Secretary of State, saying no friend of Vladimir Putin's is a friend of his.

Rubio, the Florida Republican bested by Trump for the presidential nomination, blasted the Russian coziness of Rex Tillerson, the ExxonMobil CEO and Trump's expected choice for Secretary of State. In 2013, Putin awarded Tillerson with the Order of Friendship, Russia's top honor for a foreigner. Trump also praised Tillerson on Fox News Sunday for the "massive" business deals he has done in Russia.

Rubio, a member of the Senate Foreign Relations Committee, wasn't buying it.

"Being a 'friend of Vladimir' is not an attribute I am hoping for from a #Secretary of State" Rubio tweeted.

The Trump-Rubio feud dates to the nomination fight, which was marked by personal insult.

Rubio's taunt about Trump's "small hands" was met by a barrage from Trump.

“I call him little Marco," Trump said in March at a rally in Ohio. "Little Marco. Hello, Marco."

But Rubio ultimately endorsed Trump and then won reelection to his Florida Senate seat.