Trita Parsi

"Anything that currently takes more oil off the market will push prices up, which in turn will push gas prices further."

"This would take another 12 percent of global oil flow away from the global markets and it would push up oil prices dramatically."

"There is a degree of optimism on both sides, given the movement that was achieved yesterday. But there is no final deal yet, and as a result, things can still break down."