Today, all of CSBA’s senior scholars join dozens of experts from a bipartisan group of think tanks in calling for reforms to the Department of Defense.

Eric Edelman and Tzvi Khan on how Moscow's long-time gaming of the 1987 INF Treaty illustrates dangerous lessons.

Robert Joseph, Eric Edelman, Rebeccah Heinrichs •

Last week, the government confirmed that Kayla Mueller had died while in the custody of ISIS. In the weeks prior, we learned about the brutal murders of three innocent people -- the beheading of two Japanese citizens and the immolation of a Jordanian pilot. That followed news that Russia was stepping up its aggression in Ukraine, which followed the overthrow of the Yemeni government by an Iranian proxy, which followed the Charlie Hebdo killings, which followed the North Korean cyber attack on an American company. The Pentagon has announced more troop deployments to the Middle East. Boko Haram is still kidnapping people in Nigeria, tensions are still high in the South and East China Seas, and Iran is still positioned to develop a nuclear bomb. China continues its massive military build-up, which is shifting the balance of power in its favor in the Western Pacific.

The nuclear negotiations between the United States and Iran appear stalemated. Meanwhile Iran is on the march in the Middle East with its forces supporting the coup in Yemen, buttressing the Assad war-machine in Syria, mediating between factions in Iraq, and plotting with Hezbollah operatives on the periphery of Israel. Today, the American alliance system stands bruised and battered while our friends in the region perceive Iran and its resistance-front galloping across the region.These two simultaneous developments—the deadlock in nuclear talks and Iran’s aggressive moves in the region—are not coincidental. They are intimately linked, and that should be a lesson for President Obama: The nuclear deadlock cannot be broken unless Washington reengages in the myriad of conflicts and civil wars plaguing the region, particularly now that Yemen is vulnerable and the Saudi royal family is in a state of turmoil following the death of King Abdullah on Thursday.

After a decade of patient negotiations with Iran over its contested nuclear program, the prospects of the United States and other world powers securing a final deal are not good. The wheels of diplomacy will grind on and an extension of the talks should be granted. But it is time to acknowledge that the policy of engagement has been predicated on a series of assumptions that, although logical, have proven largely incorrect. As Washington assesses its next moves, it would be wise to reconsider the judgments that have underwritten its approach to one of its most elusive adversaries.