Behold, thy people in the midst of thee are women: the gates of thy land shall be set wide open unto thine enemies: the fire shall devour thy bars.
Behold, thy people - thy soldiers.
In the midst of thee are women - unable to fight for thee (Isaiah 19:16, "In that day shall Egypt be like unto women;" Jeremiah 50:37; Jeremiah 51:30).
The gates of thy land - the fortified passes or entrances to the region of Nineveh (cf. Jeremiah 15:7). Northeast of Nineveh there were hills, affording a natural barrier against an invader; the guarded passes through these are probably "the gates of the land" meant.
The fire shall devour thy bars - the "bars" of the fortresses at the passes into Assyria. So in Assyrian remains the Assyrians themselves are represented as setting fire to the gates of a city (Bonomi 'Nineveh,' pp. 194, 197).