The East Liberian Sea is near the Bering Strait and the Chukchi Sea, which is known as the western Arctic. The opposite side of the Arctic near Greenland and Svalbard is known as the Eastern Arctic, and that is where ice is lost flowing out the Fram Strait. The designation has nothing to do with east or west longitude.
NSIDC defines the western Arctic in their latest sea ice news.
Sea ice retreat was later and not as extreme relative to recent years in the western Arctic (i.e., the Beaufort, Chukchi, and East Siberian seas)