Student or Learner
In recent weeks American commanders have been openly accusing Iran of allowing the technology for deadly armour piercing bombs to cross the border into that area of Iraq, a charge Iran has denied.
Please explain the highlighted parts.
For more context, please refer to BBC NEWS | Middle East | Iraq blasts kill nine US troops
armour piercing bomb = a bomb that can go through the thick metal of a tank. Some say that the bombs that are capable of this come from Iran. The bomb has a special shape and when it explodes, the metal melts and flies off at such speed that it can cut through thick metal.