A U.N. official says the world body will begin providing peacekeeping troops with 'no excuses' cards — part of a wider effort to combat sexual abuse in the organization's international stabilization operations.

Jane Holl Lute, special coordinator on improving the U.N. response to sexual exploitation and abuse, said the cards would make very clear the organization's standards of behavior during deployment.

Other measures to be introduced include mandatory training for troops and commanders and standardizing norms for reporting and dealing with cases where peacekeepers are implicated in sexual abuse.

The U.N. has long faced allegations of sexual abuses by its peacekeepers, especially those based in Central African Republic and Congo. The U.N. says there were 69 allegations of sexual abuse and exploitation by peacekeepers in 2015.