In Havana, a patrol ship of the Canadian Navy arrived just a few hours after the visit of the US submarine USS Helena. The ships followed Russian military vessels that arrived on the island earlier this week, reports Reuters. The Canadian patrol ship Margaret Brooke began maneuvers on the morning of June 15 to enter the port of Havana. In the Canadian Joint Operations Command, this was called a port visit … in recognition of the long-standing bilateral relationship between Canada and Cuba. Earlier, the Southern Command of the US Armed Forces stated that the fast-attack submarine Helena arriv…