Rarely gun-shy, Donald Trump took to Twitter this morning to chide Marco Rubio, who is seen as ascendant following this week's debate, and Jeb Bush's poor performance and low speaking time.

Trump attacked Rubio for being "disloyal" and "ambitious" by challenging his former mentor Jeb Bush in this race.

Bush was Florida governor when Rubio was Florida House speaker, and is seen as having helped to nurture and promote Rubio's early political rise.

Read more on WashingtonExaminer.com