From xob laim@21:1/5 to All on Fri Aug 16 21:48:48 2019
Yog vim li cas txoj kev Ho chi Minh trail twb Los tsis txog Xieng Khouang thiab PDJ, thiab operation Barrel Roll involve txoj ho chi Minh trial xwb. Ua cas Xieng Khouang ho yog lub most bombed province? Tsis yog tsog rog hauv tebchaws Los Tsuas lob tshaj
qhov peb xav lob?