A year after the attacks in Benghazi that killed the United States ambassador to Libya and three other Americans, the Justice Department has indicted suspects. Intelligence officials have a general idea of where they are hiding. And the military has a contingency plan to snatch them if that becomes necessary.

But the fledgling Libyan government, which has little to no control over significant parts of the country, like Benghazi and eastern Libya, has rebuffed the Obama administration’s efforts to arrest the suspects. …

Some military and law enforcement officials have grown frustrated with what they believe is the White House’s unwillingness to pressure the Libyan government to make the arrests or allow American forces to do so, according to current and former senior government officials. Mr. Obama acknowledged last month at a news conference that the suspects had been charged but were still on the loose. …

“Whether he likes it or not, he is going to have to deal with this issue,” said a former senior American official, referring to Mr. Comey. “There’s a huge frustration on the issue among the agents about why nothing has happened to these guys who have killed Americans.”