The jury-selection process began Tuesday for four men accused of plotting to plant bombs outside a Bronx synagogue. The defense is likely to focus on the confidential informant in the case.
New York's federal courts have seen many major terrorist trials since the early 1990s, several involving Al Qaeda-linked operatives.
At least 21 plots to launch attacks on American soil have been thwarted. Here's a chronology.
Organized groups are still the main threat, but homegrown jihadists can be very dangerous, too.
Four men planned attacks against Jewish and military targets, according to authorities.