Six months after President
Obama also promised to make the drone campaign more transparent. But a blanket of secrecy thus far has remained firmly in place.
The panel also voted to impose additional intelligence demands before the
"The American people should be given basic facts about mistakes when they are made, and they should also be given the rules that the government must follow when targeting and killing an American involved in terrorist activities," Sen.
The proposed restrictions, however, part of a broader intelligence bill, may not survive. Republicans on the
The White House has yet to take a position. Caitlin Hayden, spokeswoman for the National Security Council, said the administration already was transparent concerning drones.
"The president has committed to undertaking these activities with the greatest possible transparency, and we will continue to share as much information as possible with the American people, the
In a speech in May at National Defense University, Obama said he had signed a policy directive that set new standards before the White House would approve targeted killing by drones.
Obama said the
The number of strikes already had fallen before May, but the new rules served to cut the frequency further.
The Long War Journal, which tracks drone attacks through local news reports, has counted 22 strikes this year in Yemen, down from 42 last year. It has counted 25 attacks in Pakistan this year, down from 46 last year and a peak of 117 in 2010. A single strike has been reported in Somalia this year.
Administration officials have said drone strikes have killed relatively few civilians, but have refused to say how many. The Long War Journal says 11 civilians have been killed in Pakistan this year and two in Yemen; other estimates are higher.
In June, a drone-launched missile hit an SUV carrying an Al Qaeda commander in Yemen. CIA officers didn't realize that his younger brother also was in vehicle, according to U.S. officials who would not be named because the operation is classified. The CIA later put the victim's age at between 6 and 13.
The CIA has given a classified briefing to Congress on the death, but has refused to acknowledge it publicly. The
In part, drone strikes have declined because there are fewer identified terrorist leaders to hit. In Pakistan, the core leadership of the Al Qaeda network founded by Osama bin Laden has been decimated, although remnants are still active.
But experts say the Nov. 1 drone strike that killed Pakistani Taliban leader Hakimullah Mehsud, who helped organize the suicide bombing that killed seven CIA officers and contractors in December 2009 in eastern Afghanistan, proves that drones remain a vital counter-terrorism weapon.
Al Qaeda in the Arabian Peninsula, which is based in Yemen, has weakened but is still virulent. Nine U.S. drone strikes were launched against the group in August after authorities detected a plot against U.S. embassies. But the pace has dropped to about two a month since then.
Harold Koh, who served as
But Koh, now a professor at Yale Law School, said he saw "little or no movement" on making the program more transparent, a goal he believes is necessary to boost the program's legitimacy abroad.
In May, White House aides indicated that the
That plan has stalled, however, due to logistical, bureaucratic and legal concerns.
The CIA is resisting giving up its drones, especially in Pakistan, where the government almost certainly would oppose
"We made a great deal of progress at the CIA, and it was a very effective operation in terms of establishing targets and conducting very specific strikes at going after core Al Qaeda leadership," he said on CBS' "Face the Nation" on Nov. 10.
The Pentagon "is beginning to develop that kind of capability," he said.
"I think ultimately the more we can probably put into the military the better, because it's a much more open process."