Trump Slams Jeb Bush and 'His Incompetent Campaign for President'

Donald Trump Friday hit back at Republican presidential rival Jeb Bush after the former Florida governor slammed him Thursday as a "bully" with a "high volume" campaign that has "lots of talk, but nothing specific."

The front-runner said on Twitter:

I have an idea for @JebBush whose campaign is a disaster. Try using your last name & don’t be ashamed of it!

— Donald J. Trump (@realDonaldTrump) December 18, 2015

Weak & ineffective @JebBush is doing ads where he shows his statement in the debate but not my response. False advertising!

— Donald J. Trump (@realDonaldTrump) December 18, 2015

.@JebBush has embarrassed himself & his family with his incompetent campaign for President. He should remain true to himself.

— Donald J. Trump (@realDonaldTrump) December 18, 2015

Bush, who has fallen to fifth place in recent national polls, told CNN Thursday that Trump was not "a serious candidate" and that "he would bring chaos to the presidency as he's done to the campaign."

The former governor strengthened his attacks on the billionaire in the past week, starting with Tuesday's fifth presidential debate in Las Vegas.

Bush also dismissed Russian President Vladimir Putin's praise of Trump. Putin called him "the absolute leader in the presidential race."

"I don't respect Vladimir Putin," Bush told CNN. "To get praise from Vladimir Putin is not going to help Donald Trump."