WITH GWEN IFILL
FRIDAY, AUGUST 29 @ 9:00PM
The crisis in Ukraine and the threat of Islamic State militants (ISIL) are just two of the foreign policy challenges President Obama and his national security team are facing this week.
The conflict in Ukraine has intensified as Russian troops have brazenly moved inside Ukrainian territory. NATO released satellite images it says show as many as 1,000 Russian armed forces entering southeastern Ukraine, a claim Russia denies. The escalation comes just days after Russian President Vladimir Putin and Ukrainian President Petro Poroshenko met to discuss ways to end the conflict.