After six years of an uneasy and at times violent truce, the specter of a new war is looming large in Russia-Ukraine relations. In retaliation for Kyiv’s recent crackdown on pro-Russian media and politicians, Moscow is staging a large-scale and ostentatious military buildup along the Ukrainian border. The situation is …

The second attack on a nuclear facility in five months has prompted calls for Iran to quit talks on reviving the nuclear deal. After another attack on Iran’s Natanz nuclear facility, hard-liners in Iran have called for ending the negotiations in Vienna on the United States’ reentry to the 2015 …

Hayat Tahrir al-Sham, which controls Syria’s northwestern province of Idlib, is close to ending the presence of al-Qaeda affiliate Hurras al-Din, after arresting one of its top active commanders and closing its military facilities in the area. Al-Qaeda-affiliated Hurras al-Din (Guardians of Religion Organization) in Syria’s northwestern province of Idlib …