Fox News military analyst Gen. Jack Keane (Ret.) appeared on "Sunday Morning Futures" today to weigh in on what he called "a strategic shift in the balance of power in the Middle East."

Saudi-led airstrikes in Yemen will continue until Iran-backed Shiite rebels there "withdraw and surrender their weapons," a summit of Arab leaders decided Sunday. The leaders also agreed in principle to forming a joint military force.

"The Saudis and others have decided to stop it right here," Keane said. "They have drawn a line and said, 'No more.' So this is very significant."

Keane asserted that the U.S. is partly to blame for this destabilization, since one Obama administration policy decision after another has encouraged Iranians and radical Islamists to fill the power vacuum in the region.

Keane also told Maria Bartiromo about his recent meeting with Afghanistan President Ashraf Ghani, who Keane called a transformational, pro-U.S. leader.

From a security standpoint, however, Keane said that it remains a fragile situation in the country, and "we could still lose Afghanistan."

Keane said that the U.S. needs to keep a small amount of troops in Afghanistan until at least 2020, to go along with continued funding of the Afghan security forces.

As for the Iranian nuclear talks, Keane said that the discussions themselves have enabled some of the chaos and upheaval in the Middle East. On top of that, Keane said, it appears that it will be a bad deal for the U.S.

"This is all to [Iran's] advantage," Keane stated.

Watch more from the fascinating, wide-ranging "Sunday Morning Futures" interview above.

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