Mr. zuma has drawn flak for refusing to fire officials for poor performance .
No shells or flak fell on the island during the morning .
Taking internal flak , however , is a key element in an opposition 's rehabilitation , as both david cameron and tony blair knew .
During the second world war , british and american scientists devised scores of devious electronic countermeasures designed to trick nazi radar and divert flak and fighters away from allied bomber streams .
Fortune -- for all the flak china gets over its exchange rate and other economic policies , it 's hard not to wonder if the asian giant might be doing more good for the u.s. economy than most people realize .