Sen. Markwayne Mullin (R-OK) declined to designate Vladimir Putin a “war criminal” during a Sunday interview with NBC News and was confronted with comments from his Republican Senate colleagues blasting the Russian president.

Some of President Trump's fervent allies stood behind his actions in the Oval Office with Ukrainian President Zelenskyy. But Ukraine supporters within the Republican Party have expressed concerns about how the meeting played out and fear it could derail further negotiations with the country.

Republican lawmakers are urging President Trump to salvage negotiations with Ukrainian President Volodymyr Zelensky in hopes of reaching a peace deal that halts Russian encroachment and possibly gives the United States access to Ukraine’s rich mineral wealth.

As Ukraine balks at Trump’s efforts to seize its mineral reserves, the Russian president just suggested that the U.S. could access minerals … in Russian-held Ukraine.