The Obama administration may announce on Tuesday a decision to send more military advisers to Iraq, U.S. officials said, as the United States helps confront radical Islamist militants who threaten Iraqi minorities and the northern Kurdish enclave.

Several U.S. officials, speaking on condition of anonymity, said a decision to send at least 70 extra military personnel to Iraq was likely later in the day, but that internal discussions continued and a final decision had not been made.

Since fighters from the self-styled Islamic State, an al Qaeda offshoot, seized much of northwestern Iraq in June, the United States has sent about 700 military personnel to protect U.S. diplomats there and take stock of Iraq’s military capacity. […]