Eight foreign ministers and 11 undersecretaries from the Rio Group of Latin American nations took part in the two days of talks in Pilar, 70 kilometres northwest of Buenos Aires.
London's top police official said he regrets the death of a Brazilian national shot and killed by armed officers in a subway station but defended the policy of shooting to kill suspected suicide bombers.
The offshore patrol vessel HMS Leeds Castle has provided valuable assistance to firefighters during her final visit to the county of Kent.