He’s also giving a gift to Putin, by signaling that he will continue to do all he can to delegitimize efforts to establish the full truth about Russian interference, which in turn telegraphs that Russia can continue such efforts in the future (which U.S. intelligence officials have warned will happen in the 2018 elections).
https://www.washingtonpost.com/blogs/plum-line/wp/2018/07/16/trump-is-now-repaying-putin-for-helping-him-win-the-presidency/?utm_term=.68eac2488c1e
https://www.washingtonpost.com/blogs/plum-line/wp/2018/07/16/trump-is-now-repaying-putin-for-helping-him-win-the-presidency/?utm_term=.68eac2488c1e