ISIS claims responsibility for deadly attacks in Iran
The pair of attacks Wednesday were carried out on Iran's parliament and the shrine of Ayatollah Ruhollah Khomeini, which have killed two security guards and wounded more than 30 people.
The presidential candidate says his GOP rival "sits in Trump Tower and sends tweets late at night."
GOP presidential candidates meet head to head in the last debate before the New Hampshire primary.
Trump and Cruz respond to concerns about the Republican candidate's temperament at the ABC News GOP Presidential Debate.
Harry Styles, Liam Payne, Niall Horan and Louis Tomlinson answer fun questions from the fan-filled audience.
The man behind the shows "Shark Tank" and "Survivor" would like to cast Russia's president in a new reality show.
ABC News' Martha Raddatz takes viewers through Qom, the theological heart of Iran.
Skeptics of the deal worry Iran might have an alternative purpose for making the agreement.
Secretary of State John Kerry's meeting with Iranian officials irks Israeli prime minister.
Iranian leaders will negotiate after sanctions have crippled their economy.