TRIA, which offers a backstop to private insurers in the event of a terrorist incident on American soil.

ECONOMIST: The bombings in London may affect an American debate

Yet none has been used in a terrorist incident so far, he said.

NPR: TSA Stands By Plan To Allow Small Knives On Planes

"There are strong indications this is a terrorist incident, " said British Prime Minister David Cameron, who was on a trip to Paris.

WSJ: A Killing Puts U.K. on Guard for Terror

President Barack Obama said for the first time on Tuesday that he ultimately was responsible for the safety of four Americans who were killed in Libya last month, but denounced as "offensive" Republican charges that the White House initially resisted labeling the incident a terrorist attack.

WSJ: Obama Takes Responsibility for Deaths in Libya

Professor of international security at Birmingham University, Tony Mason, said Osama Bin Laden may have been behind any potential terrorist threat arising from this incident.

BBC: Poison find underlines terror threat

In addition to declaring the blast a terrorist attack, the State Department said the incident illustrates the need for congressional funding for improvements in diplomatic security.

WSJ: Leftist Group Claims Bombing at U.S. Embassy in Turkey

In Nigeria, the government said Saturday that it "received with dismay the news of attempted terrorist attack on a U.S. airline" and has ordered its security agencies to investigate the incident.

CNN: Obama orders review of flight screenings

The incident has influenced security for each succeeding Olympics, an impact that's only been heightened by terrorist attacks of the 21st century.

CNN: 2012: Predicting the future, with hindsight