Ramaswamy came out hitting the other candidates, saying he's the only one who hasn't been bought and sold. When it came to his comments on Ukraine, though, Pence and Haley are hitting back. "You have no foreign policy experience and it shows," Haley said. As Jacob said, his quick rise is drawing attacks, especially on his lack of political experience.
-Analysis by Monica Potts of FiveThirtyEight

Haley tried to go after DeSantis as he was answering a question on Ukraine but it didn't generate the same back-and-forth as with Ramaswamy, and the moderators quickly moved on to another matter. Clearly Ramaswamy -- his lack of political experience and rapid rise in the polls -- has gotten under the skin of the other candidates on the stage and they're going out of their way to take him down a peg even if it means forgoing opportunities against the ostensible polling leader.
-Analysis by Jacob Rubashkin, Inside Elections

The discussion has turned to the U.S. relationship with China. Republicans’ opinion of China has been steadily worsening over the last six years, according to polling from YouGov/The Economist. As of their most recent survey, 91.4 percent of Republicans said China is an enemy of the United States, while just 3.7 percent said China is an ally. The last time more Republicans said that China was an ally than said it was an enemy was April 17, 2017.
-Analysis by FiveThirtyEight

Pence and Ramaswamy got into another spat, this time over Ukraine, with the vice president attacking his rival over Ramaswamy's calls to send military resources to the southern border, not Ukraine.

"Anybody that thinks that we can't solve the problems here in the United States and be the leader the free world has a pretty small view of the greatest nation on Earth," Pence said.

"I have a newsflash. The USSR does not exist anymore," Ramaswamy shot back, referring to the Soviet Union.

-ABC News' Tal Axelrod

Trump teased for months whether or not to attend the first GOP primary debate, citing along the way his yawning leads in early national and statewide polls.

"Why would I allow people at 1 or 2% and 0% to be hitting me with questions all night?" he said in an interview in June with Fox News anchor Bret Baier.

When he ultimately decided to not appear on stage on Wednesday, it was precisely that lead he cited.

"The public knows who I am & what a successful Presidency I had," Trump wrote on social media, adding, "I WILL THEREFORE NOT BE DOING THE DEBATES!"

It also appears unlikely that Trump will attend the second debate hosted next month by The Ronald Reagan Presidential Foundation & Institute, the administration of which Trump has feuded with in the past.

"He's not going to be in California," senior Trump campaign adviser Chris LaCivita said on the conservative "Ruthless" podcast Wednesday. "Well, first of all, with President Trump, you know, he could change his mind at any moment. Right. But I think he said the other day, he should take his history for face value when he said debates, right? And you should just assume that he won't until he does."

-ABC News' Tal Axelrod