'Humanitarian catastrophe' unfolding in Aleppo
03:51NBC's Ayman Mohyeldin says Americans should be concerned about the situation in Aleppo because it's a "humanitarian catastrophe." Mohyeldin and NBC's Katy Tur discuss the latest details.
NBC's Ayman Mohyeldin says Americans should be concerned about the situation in Aleppo because it's a "humanitarian catastrophe." Mohyeldin and NBC's Katy Tur discuss the latest details.
