President Trump wants to designate the Muslim Brotherhood, an international Islamist movement, as a terrorist organization. The designation would impose sanctions on the group and those who do business with it.

Officials in the Pentagon and State Department have raised objections to the plan, saying that the Muslim Brotherhood does not meet the legal definition of a terrorist group and that its designation could have unintended consequences in allied countries where the Brotherhood fields prominent political parties.

The Muslim Brotherhood has frequently denounced terrorism and violence.

Here’s a brief guide.

What is the Muslim Brotherhood?

The Muslim Brotherhood is a missionary movement founded in Egypt in 1928 by Hassan al-Banna, a schoolteacher working in the town of Ismailia, near the Suez Canal. He argued that an Islamic religious revival would enable the Muslim world to catch up to the West and shake off colonial rule.