Presidents of Colombia , Mexico , Guatemala , Panama to meet Friday in Panama . They will discuss ways of countering growing violence and drug-trafficking . Comment: Instability caused by crime in Mexico could threaten U.S. which shares a border .
Presidents of Colombia , Mexico , Guatemala , Panama to meet Friday in Panama . They will discuss ways of countering growing violence and drug-trafficking . Drug-fueled violence reached record levels in Mexico last year , with 5,400 slayings . Instability caused by crime in Mexico could threaten U.S. which shares a border .