It is possible that no foreign government has pressured gava, but all applications for visas are met with the directive to supply the new passports. It could be coming from both or any side. Like gava asking embassies in Nairobi to issue visas on new passports only, thereby rendering the old passports obsolete. The directive could be from foreign embassies as well. What you need to watch is what happens at JKIA when you arrive with an old passport and they attempt to Miguna you for their own mistakes.