A group claiming to be a Yemeni branch of the Islamic State group said it carried out the attacks that have killed more than 130 people and warned of an 'upcoming flood' of attacks against Houthi rebels.
The Israeli strategic affairs minister says two fundamental issues that need to be toughened up were the number of centrifuges and how to prevent Iran getting any capacity to pursue research and development.
CIA Director John Brennan said Sunday that Iran's involvement is complicating the US mission and may stir up sectarianism. Iraqi forces have surrounded Tikrit in preparation for a final push into the city.
Minority Yazidis were among those targeted by the self-proclaimed Islamic State during its expansion in northern Iraq and Syria. A UN panel accused the militants of committing genocide and crimes against humanity.