It's a mess, it's a mess and at this point we probably have to [leave U.S. troops in Afghanistan] because that thing will collapse in about two seconds after they leave.

Interesting, polls on who won the GOP debate. http://t.co/iB6NGQsg5v

I watched lightweight Senator Marco Rubio, who is all talk and no action, defend his WEAK position on illegal immigration. Pathetic!

Great news! Just out--the highly respected USA Today/Suffolk University Poll. Enjoy! https://t.co/11pDloDTHV

I want to be unpredictable. I want to be.

Well, number one, they don't respect our president. They really don't respect us anymore and that's why they are doing this. At the same time, if they want to hit ISIS, that's OK with me. I'm not going to say we have to do it all. You…

I'm putting the people on notice to the people coming here from Syria as part of mass migration, if I win, if I win, they are going back. They are going back.

If I win this election, I will send all of the Syrian refugees home.

A couple of bad moves, maybe not one, couple bad moves, you have World War III over Syria, right? I don't think so, alright. I don't think so. Look, if Russia wants to go in there, it would have been nice if we went in as a unified front…

I will be interviewed by @donlemon tonight on @CNN at 10PM.

Rubio is totally owned by the lobbyists and special interests. A lightweight senator with the worst voting record in Senate. Lazy!

Great! https://t.co/Je440dDZbs

Prediction: Rand Paul has been driven out of the race by my statements about him-- he will announce soon. 1%!

Definitely watch @Carl_C_Icahn ‘s ‘Danger Ahead’. Very insightful, particularly on how corp inversions hurt America: http://t.co/PJN89SwvTF

I hope when Rand Paul gets out of the race—he is at 1%--his supporters come over to me. I will do a much better job for them.

I know you will enjoy reading my tax plan- http://t.co/FxtUQNXEFH #MakeAmericaGreatAgain

Looking forward to press conference on taxes at 11AM at @TrumpTowerNY.

Will be doing @OutFrontCNN with @ErinBurnett tonight at 7 pm re: tax reductions and various other topics.

"""@JennaLeeUSA: When asked why he has his own magazine covers on his walls - @realDonaldTrump replies: ""It's cheaper than wall paper..."" Ha!"

We need a strong tone. We don't need that soft, soft group of people. We need something tough.

There is so much money to be saved. We're reducing taxes, but at the same time, if I win, if I become president, we will be able to cut so much money and have a better country.

What China is doing is one of the great theft in the history of the world. What they have done? They have taken our jobs and our money.

I will probably end up of paying more money. But at the same time I think the economy will do better so I'll make it that way.

I think it will probably be more than before if you look what is going to happen to the economy, the economy is going to chase the absolutely like a rocket.

I guarantee, I think I would get along very well with him. We were both on '60 Minutes' last night, Putin and Trump.