Texas Sen. Ted Cruz on Thursday did not apologize for failing to endorse Donald Trump during his convention speech, saying only that he “will not be voting for Hillary Clinton” in an interview with NBC News.

“As I said last night very explicitly, the way to unify the party is not to scream and yell and hurl insults. The way to unify the party is to stand behind shared principles and shared values. And like millions of voters, I will be watching and listening to the candidates."

Watch the full interview here: