Boko Haram's attacks increased in frequency and magnitude, killing and injuring many.
The police quickly intervened, and a bomb exploded, killing seven policemen and injuring many others.
And last week it shelled a South Korean island, killing two civilians and two marines and injuring many more.
Then just this month, a crowded bus blew up in Shanghai, killing three people and injuring many more.
The bomb threat comes two days after a group of gunmen made a number of attacks in the centre of Paris, killing 129 people and injuring many more.
Not since terrorists blew up the USS Cole two years ago, killing 17 crew and injuring many more, has the threat seemed so apparent.
Chinese newspapers and television were barred from reporting the trials.A bomb exploded in a garage beneath the Jakarta stock exchange, killing 15 people and injuring many more.
Over Friday night police in Kiev broke up the remnants of the anti-government demonstration, swinging truncheons and injuring many, news agencies and witnesses said.
Monday is the 25th anniversary of the Brighton bomb, which targeted Margaret Thatcher and the Tory party conference, killing five people, and injuring many more.
Israeli forces stormed the Mavi Marmara and five other ships in May 2010 to prevent them reaching Gaza, killing 10 people and injuring many more.
My father said that one day, the boys were at the stadium when the bleachers collapsed, trapping and injuring many people.
