Since US President Barack Obama stepped into the White House, his administration has had a consistent reaction when it located an accused terrorist: Drop a Hellfire missile on the guy’s head. Last Saturday was different. US forces got the drop on an Al Qaida operative named Nazih Abdul Hamed Al Ruqai. But rather than drone-kill him, those forces put him in cuffs. That not only marks a rather dramatic departure from what has been standard Obama administration policy. It could open a new chapter in the struggle against Islamic terror.

Al Ruqai, better known by his nom de guerre Anas Al Libi, is accused of helping plan the bombings of two US embassies in Africa in 1998. He was captured last Saturday “under military authorities” and “is currently lawfully detained under the law of war in a secure location outside of Libya,” Pentagon spokesman George Little said in a statement. The operation, approved by Obama, reportedly was carried out with the assistance of Federal Bureau of Investigation (FBI) and Central Intelligence Agency personnel. “Wherever possible, our first priority is and always has been to apprehend terrorist suspects and to preserve the opportunity to elicit valuable intelligence that can help us protect the American people,” Little said.

Capture may be the priority, but it is not the norm. The Obama administration has killed far more suspected terrorists and militants with drones and special operations strikes than it has brought back to face justice in the US courts system. On the same day that US forces were capturing Al Libi, special operations commandos launched a strike in Somalia aimed at a senior leader of the terrorist group Al Shabab, which has claimed responsibility for the audacious assault at a Nairobi shopping mall. The dual operations provided a stark example of the breadth of US counterterrorism policy, which can encompass law enforcement actions as well as clandestine attacks.

Al Libi would be only the second person allegedly involved in the 1998 embassy bombings to be tried in the US since the September 11, 2001, attacks. That first, Ahmad Khalfan Galiani, was convicted in 2009 and has the distinction of being the only person held in Guantanamo Bay to be brought to the US to stand trial in a criminal court. No accused conspirators in the 9/11 attacks have faced trial in the US. The alleged mastermind, Khalid Shaikh Mohammad, is being tried in a military court in Guantanamo Bay, Cuba.

Obama administration officials have long expressed a preference for prosecuting terrorists in US courts. But privately, they have said there are few places to keep them imprisoned while they await trial. A decision to try Mohammad in a US court and keep him incarcerated in New York during the trial met with outrage from local, state and congressional officials. It is not clear whether Al Libi’s capture signals a new interest in prosecuting suspected terrorists in US criminal courts. However, in recent months, the administration’s use of lethal drone strikes has been evolving, to the point where they can no longer be seen as the default option for going after terrorists. The number of strikes has not exactly dropped off; there has been a resurgence in Yemen in recent months. But the administration has taken drone strikes off the table in Iraq, where Iraqi officials have floated the idea of using drones to hit Al Qaida militants there.

Little, the Pentagon spokesman, said the capture of Al Libi was “a clear sign that the United States is committed to using all the tools at our disposal to bring to justice those who commit terrorist acts against Americans”.

National security experts said the capture of Al Libi appears to rely on the authorisation to use military force against Al Qaida that Congress passed in 2001, which is the same legal doctrine that the Bush and Obama administrations have used to justify lethal strikes.

“Assuming [Al Libi] has not since abandoned his role in Al Qaida, then, he is almost certainly covered by the AUMF,” Marty Lederman, a former senior Justice Department official, wrote on the new national security affairs blog Just Security. “Moreover, even if he weren’t, the FBI likely had the statutory authority ... to capture him overseas in order to bring him back to the US for trial.”

If that is the case, capturing Al Libi will not involve “any assertion or exercise of new or expanded legal authority,” Lederman wrote.

Robert Chesney, a national security expert and co-founder of the blog Lawfare, also saw the authorisation as “plainly relevant” to the capture. “That said, don’t expect Al Libi to stay in military custody for more than a few weeks. This situation will unfold just like the capture of Ahmad Warsame a few years ago, meaning that after a period of no more than, say, six-eight weeks, Al Libi almost certainly will be flown to the United States to face a criminal trial.” Warsame, a Canadian citizen accused of aiding terrorists, was arrested in 2003 and held and questioned for more than a month before he was indicted.

The Al Libi operation also signals that the “battlefield” of the war on terror, as the US sees it, is broadening. “The invocation of the ‘law of war’ rationale overtly extends the battlefield for the war on Al Qaida, such as it is, to Libya,” Phillip Carter, a senior fellow at the Centre for a New American Security and a national security lawyer, said. “That’s significant at a time when we are drawing down in Afghanistan, after successfully dismantling Al Qaida there and in Pakistan. The threat is metastasising and we are following it.”

Carter said that if Al Libi is ultimately brought to trial, “This would mirror what has been done in recent cases, and reflect the evolution of a post-war CT model where military forces work in concert with other elements of national power”. Phillips pointed to the recent criminal prosecution of two Al Qaida members in New York as cases where the administration could have used lethal force, but chose a law enforcement route.

Officials in Libya’s interim government have demanded an explanation for the US operation, which they described as a “kidnapping of a Libyan citizen”. The US has never asserted that it needs the permission of a host government to conduct anti-terrorism operations on its soil, although in some cases it does seek out and receive that blessing. But officials have stressed that if a government is unwilling or incapable of rounding up terrorists plotting attacks against the US, American forces will act in the nation’s defence — a notion that traditionally receives broad support in Congress.

“These raids show the president will use force when necessary to combat Al Qaida threats wherever they may be,” said Eliot Engel, the ranking Democrat on the House Foreign Affairs Committee. “Terrorists who have threatened the homeland should know that US will not rest until they have been brought to justice or otherwise neutralised. We will never give up the hunt for those with American blood on their hands.”

Al Libi has been indicted in the Southern District of New York in connection with his alleged role in the embassy bombings. He is accused of conducting photo surveillance of the embassies. Those photos were shown to Osama Bin Laden, who gave instructions about where to place truck bombs to do the most damage, according to a former Al Qaida member who pleaded guilty for his role in the attacks. Al Libi was also once known as Al Qaida’s top computer expert. He spent time with Bin Laden in Somalia in the mid-1990s. The embassy attacks were partly in retaliation of US military strikes in Mogadishu in 1993. The charges against Al Libi include planned attacks against US forces stationed in Saudi Arabia, Yemen and Somalia.

Four other men were convicted for their role in the embassy bombings, in a trial that ended in August 2001. They are currently serving life sentences in the supermax prison in Colorado.

— Washington Post

Shane Harris is a senior writer for Foreign Policy and author of The Watchers: The Rise of America’s Surveillance State.