Christmas comes but once a year -- for which Londoners can be thankful, since the Irish Republican Army has chosen to mark the season with terrorist attacks. Last week a bomb exploded at London's Clapham Junction, the country's busiest railway intersection. No one was injured, but an estimated 500,000 commuters were affected and the city's businesses could lose around $90 million.
Since Dec. 1, the I.R.A. has set off 25 fire bombs across the country in a campaign of economic sabotage. Although no one has yet been hurt, one device went off at London's National Gallery.
In Northern Ireland the activities...