ISIS seized the last regime-controlled border crossing between Syria and Iraq with the capture of the al-Tanf crossing on May 22 following a regime withdrawal.
Control of Urban Terrain in Syria
ISIS seized the regime-held town of al-Sukna west of Deir ez-Zour City on May 14, severing the regime’s ground line of communication from Palmyra in the central Homs Desert to Deir ez-Zour City and effectively isolating remaining regime positions in western Deir ez-Zour.
Kimberly Kagan is the founder and president of the Institute for the Study of War (ISW), a nonprofit, non-partisan organization with a unique, dual mission: provide real-time intelligence to help leaders make informed decisions in conflict zones around the world, and educate the next generation of national security leaders. ISW is globally recognized and cited for its daily analysis and maps of Russia’s invasion of Ukraine.