The United States brutalized scores of terror suspects with interrogation tactics that turned secret CIA prisons into chambers of suffering and did nothing to make America safer after the 9/11 attacks, Senate investigators concluded Tuesday.

The Obama administration is open to limits on the duration of its military efforts in Iraq and Syria and on the potential use of ground forces in a new war authorization against the Islamic State, a top presidential adviser said Wednesday.

Sec State Kerry met twice with Oman’s foreign minister but could not reach a deal concerning Iran’s potentially weaponizable nuclear program.

An Iranian nuclear agreement is the Obama administration’s grandest foreign policy objective, a legacy-defining endeavor that holds the prospect of ending the gravest potential threat to Israel and the Middle East and reintegrating Iran into the world community.

The United States and Russia are vowing to cooperate more closely on a broad array of global security matters even as they remain deeply at odds over the crisis in Ukraine.

The Obama administration’s promise to limit U.S. military engagement against Islamic State militants makes it difficult to accept Turkey’s terms for joining the fight in neighboring Syria.