For me and like ever I told you ,these terrorist acts are perpetraded under the auspice of US and UK . Why they do this ?; .For strengthen the idea of finish with musulman or islam world. Musulman or Islamic people are stamped with the devil mark by western world and of course, this is just a cheap rethoric made by capitalists buyed by ignorants. . Acelerate and Justify the inevitable attack over Iran (This is a consumated fact). - Destabilize Russia, as part of their more longed-for plans - Make Russia join to Nato while they need it , and for the moment share the cost (russian people and money) of actual and future wars made it by these killers before destroy the Russian regime When US & UK do something always have various beneficial goals for them. See for example the planned destruction of WTC, The total contribution to the fall of the Soviet Union, The criminal attack over Iraq. Here the common factors are; natural resources, starvation wage ( slavery), prostitute the conquest women, power feelings over the others, these satisfies to these perverted and illnes minds