ask marie scharf. practicing an assault exercise in the western philippiness. the drill simulates, simulates a retakinging of an island an enemy invaded and here's why that's really important. nearly three years ago china seized control are part of an island chain off the coast of the philippines saying the chinese started to build their.man-made fortress. here it is. i call it sand land. they are building land where water was by raising sand and making it land. complete with an air strip. another picture. u.s. officials warn china's artificial islands could raise tensions in the region, they call it, the great wall of sand. and as you can see there are exercises here, and i would guess that this, that you see here this -- this is also very discreet. chinese officials defended the move claiming that it's beijing's territory. not, and for public use, not for any kind of military buildup. another that will be a conflict eventually. today we just have 12. that's a new one. >>> hundreds of american paratroopers begun training in ukraine. as the country fights pro-r