Image via Wikipedia The Department of Foreign Affairs (DFA) will now officially use ISO standard initials for the the Philippines, "PH" or "PHL" replacing the ambiguous "RP". This conformance to International Organization for Standardization (ISO) is expected to help alleviate the confusion by using the the initials "RP" which is easily confused with other countries. These country initials is part of the ISO 3166 standard adopted by the ISO that defines codes for the names of countries, dependent territories, and special areas of geographical interest.