WASHINGTON, March 24 (UPI) -- U.S. senators offered varied assessments of the situation in Iraq as the president spoke with top military advisers ahead of an April progress report.

Sen. Lindsay Graham, R-S.C., spoke on CBS' "Face the Nation" following his tour of Iraq with Republican presidential hopeful Sen. John McCain of Arizona.

The war in Iraq "has turned a corner," Graham said.

"Sectarian violence is down by 90 percent," he said. "Our casualties are way down. We have a long way to go, but I believe the surge has worked on all fronts."

But Sen. Jack Reed, D-R.I., responded to Graham's assessment, noting that "the problem with Iraq is that every time you turn the corner, there is another corner," Voice of America relayed.