Three Americans, two Spaniards and a Czech citizen were arrested on Saturday after Venezuelan officials accused them of coming to the South American country to assassinate President Nicolas Maduro. The arrests were announced on state television by Diosdado Cabello, the nation’s powerful interior minister. Cabello said the foreign citizens were part of a CIA-led plot to overthrow the Venezuelan government and kill several members of its leadership. In the television program, Cabello showed images of rifles that he said were confiscated from some of the plotters of the alleged plan. The arrest o…