Hillary Clinton warns the U.S. has let its guard down on terrorism 25 years after 9/11

Terrorism remains a threat to the US, according to a warning from a former high-ranking official. Many close calls with terrorist plots have occurred over the years, with some succeeding. The official expressed concern that not enough attention is being paid to resurgent terrorist actions.

A recent event marked the 25th anniversary of a major attack, prompting reflection on the ongoing threat. The official, who held a key position at the time of the attack, noted that the threat has not disappeared.

Further details on the warning and the official's concerns are available from the source.