"We will do whatever is necessary to support our friend and ally, Belgium, in bringing to justice those who are responsible [for today's airport attack in Brussels]," President Obama asserted at a press conference in Cuba today. "This is yet another reminder that the world must unite. We must be together, regardless of nationality or race or faith, in fighting against the scourge of terrorism. We can, and will, defeat those who threaten the security of people all around the world."