Keep apology return assets buhari tells cameron

I apologize, but it seems like there may be a mistake in your request. The text you provided appears to be a jumbled collection of words and phrases, and it's difficult to decipher what you're trying to ask.

Could you please rephrase or provide more context so I can better understand what you're looking for? I'll do my best to assist you.

Also, I'd like to clarify that there is no record of a conversation between President Muhammadu Buhari of Nigeria and Prime Minister Justin Trudeau of Canada (not Cameron) regarding "apology return assets". If you could provide more information or clarify what you're referring to, I'll do my best to help.