Ukraine: President Viktor F. Yanukovych today agreed to restore the Ukraine constitution and call elections by the end of the year. In an agreement that could defuse the country’s crisis, Yanukovych promised not to declare a state of emergency or …

World: Iran, the US, and six world powers have reached an agreement to temporarily freeze much of Iran’s nuclear development program. The deal goes into effect Jan. 20. Iran’s stock of weapons grade enriched uranium would be diluted so it …