THE NEWS Three British men were found guilty in a London court of plotting to commit murder, in a case that centered on a 2006 conspiracy linked to Al Qaeda to blow up airliners bound for the United States and Canada.

BEHIND THE NEWS The verdict followed the longest and costliest terrorism prosecution in British history, officials said, with 8 of the 10 defendants convicted over three trials. The bombing method the plotters chose -- injecting ingredients of liquid explosive into plastic soft-drink bottles using a syringe -- led to restrictions on the liquids and creams passengers could take on commercial flights. Those measures remain in force worldwide.

THE NEWS The extradition of Abu Hamza al-Masri, an Egyptian-born Muslim cleric, from Britain to the United States, where he is wanted on terrorism charges, was delayed after Europe's human rights court issued a stay.

BEHIND THE NEWS The court said it wanted to examine whether American sentences were so long and prison conditions so harsh that they would violate Mr. Hamza's rights. He is serving a seven-year sentence in Britain for stirring racial hatred and inciting murder; the federal charges against him in the United States include allegations that he masterminded a terrorist ambush in 1998 against tourists, some of them Americans, in Yemen.

THE NEWS The Norwegian police arrested three men who they said made up ''one node'' of a terror network that plotted to bomb New York City's subway system and a shopping center in Manchester, England.

BEHIND THE NEWS All three men -- a Uighur from China, an Iraqi Kurd and an Uzbek -- were legal immigrants to Norway, which is known for generous asylum policies and social services. Officials said they had ties to Al Qaeda in Pakistan, had been under surveillance for a year and had begun to work on making explosives. The police said they decided to move in and arrest the men in part because The Associated Press had gotten wind of the investigation.

THE NEWS A day before Norwegian officials struck, federal prosecutors in Brooklyn charged a man they said was a senior Al Qaeda operative with involvement in those same plots and in other planned attacks.

BEHIND THE NEWS Adnan G. el-Shukrijumah, a Saudi-born American citizen, is still at large. An elusive high-value target for the F.B.I., he was closely watched after the Sept. 11 attacks before vanishing about five years ago. A reward of up to $5 million is posted for information leading to his capture. Officials said he was part of a three-man group overseeing Al Qaeda attacks in the West; drone strikes in Pakistan reportedly killed the other two men.

THE NEWS The European Parliament agreed to restart a program to track financial and bank transfers that the United States says is vital to fighting terrorism.

BEHIND THE NEWS The program, which one American official called ''a highly valuable counterterrorism tool'' that yielded hundreds of leads, was begun secretly after the Sept. 11 attacks. Privacy concerns led the parliament to suspend it in February. European Union leaders agreed to resume the effort after winning assurances from the United States that European citizens would have recourse to American courts if they thought data about them was inaccurate or had been wrongly used.