However he said that the United States must continue its pressure on Pakistan military to end interference in Afghanistan .
Talking on Afghan war in Hudson Institute in Washington, Sedney said Pakistan has a prominent role in insecurity in Afghanistan and that sanctions should increase on Islamabad.
He said the White House has sanctioned Pakistan and has put pressure on it, but the pressure did not last for long time.
“We put sanctions, we held back. A coalition support fund which is a bout a billion dollars a year several times (was cut) for a period of months. But we always backed off, actually it always stood down. Lesson the Pakistanis learned, you can outweigh the US .
So what we are doing right now, this to be continued. That pressure on Pakistan need to be continued, the additional forces that are there, they are not fighting, they are doing advising, doing intelligence , doing air support. They are actually making a big positive difference,” said Sedney.