UN troops are in a cleft stick: something has to be done for the civilian population, yet to retaliate would surely be the spark to ignite all-out war.联合国军队进退两难：为了平民不得不采取行动，可是还击势必会引发全面战争。There was nothing further to be done for this man.对于这个男人再没什么能做的了。