OKLAHOMA CITY - U.S. Senator Jim Inhofe is lending his expertise, in both military affairs and politics, to Republican presidential nominee Donald Trump.

Inhofe, R-Oklahoma, accepted a position on Trump's National Security Advisory Council earlier this month, saying he was honored to have been asked.

Inhofe didn't initially support Trump -- he was a Rubio backer during the primaries -- but he said Trump is his choice now. He said America's place in the world is greatly diminished and we can't withstand another four years of the same Democratic leadership in the White House.

"Right now, we're in a world situation where our allies don't trust us, our enemies don't fear us, and that's going to have to change," Inhofe said.

Inhofe said that's the sort of thing Trump needs to be saying out on the campaign trail, and, as a member of Trump's advisory council, Inhofe said he told him so.

"Mine was an effort to try to simplify the issues, so that they're easy and he doesn't have to get into the weeds...we'll find out if it works," he said.

Trump's political inexperience is refreshing, but has also caused him to make some mistakes, Inhofe said. For example, Trump would have done better early on not to exhibit admiration for Russian President Vladimir Putin, especially while criticizing Ukrainian leaders, Inhofe said.

"I jumped on him on Ukraine, if you remember," said Inhofe. "He was [saying] negative things about Ukraine--I said, 'You can't do that, they're one of our best allies, second only, arguably, to Israel.'"

Inhofe didn't say how Trump had taken his advice, but acknowledged he had not limited his words of wisdom to national security matters. Inhofe said, despite a clearly biased media, Trump hasn't helped himself with his angry denials of recent charges of sexual assault.

Inhofe said people are tired of it all.

"I have advised him to drop that whole thing and talk about the issues you know, where you know you're different from Hillary Clinton," Inhofe explained. "Hopefully, he'll do that."

The 81-year-old Inhofe is now completing his 30th year in Congress -- the last 22 in the Senate. He is confident that both the House and Senate will remain in the control of the GOP.