Dempsey said Iran and its proxies have been operating inside Iraq since 2004, but the Tikrit campaign signals a new level of involvement.
‘This is a bad deal. It is a very bad deal. We are better off without it,’ he declared.
Iran insists it has the right to enrich uranium and has demanded the lifting of crippling sanctions.
Until this week, there had been no confirmation of Iranian air activity.
Tehran: Iranian authorities released a British-Iranian woman on bail on Sunday, the semi-official ISNA news agency said.
John Kerry proposed to Iranian Foreign Minister that the two sides start discussing post-deadline talks in their latest meeting.
A European source in the talks said there had been “no significant progress” and “the chances of getting a deal are pretty reduced”.
John Kerry arrived in Vienna on Thursday to join troubled nuclear talks four days before a deadline.
The pardon by Ayatollah Ali Khamenei came more than 11 years before the end of Derakhshan’s prison term.
Kerry embarked Wednesday on a frenzy of high-stakes diplomacy in a last-minute push to secure an agreement.
John Kerry held an unexpected second meeting in two days with a key Arab mediator in the Iran nuclear talks.
Iran and world powers ratcheted up the rhetoric today as they entered a final round of nuclear talks.
Iran has said it managed to reverse-engineer the RQ-170 Sentinel, seized in December 2011 after it entered Iranian airspace.
With no immediate agreement in sight, officials said the discussions were expected to continue into Monday.
“Whether we can actually get a deal done, we’re going to have to find out over the next three to four weeks,” said Obama.